67486 + Interview Questions in Secondary School in Physics

1.	Calculate the peak-wavelength for the human skin when the temperature of the human skinis 32°C.
Answer» Answer: please mark this brainliest please again I follow and LIKE you to OK SIR please see

1.

Calculate the peak-wavelength for the human skin when the temperature of the human skinis 32°C.

Answer»

Answer:

please mark this brainliest please again I follow and LIKE you to OK SIR please see

Discussion

2.	Page No:Datey Determine thepresstheolis 1.25/Kg 1m²f andolmoleculesatN. TPin the density4 nitrogenBritrogennitrogen at ooat ocat N.T.P.R.M.S.ismlsspeed1489 m/s
Answer» EXPLANATION: I have answers but given after sometime. btw if u don't mind. I have a FAVOUR that do u come on my whats APP. no. 6204036446 . if u want then come otherwise it's not liking a forcing ANYMORE . bcz that's why I'm telling that this app not uses much more. baaki aapki marzii [email protected]

2.

Page No:Datey Determine thepresstheolis 1.25/Kg 1m²f andolmoleculesatN. TPin the density4 nitrogenBritrogennitrogen at ooat ocat N.T.P.R.M.S.ismlsspeed1489 m/s

Answer»

EXPLANATION:

I have answers but given after sometime. btw if u don't mind. I have a FAVOUR that do u come on my whats APP. no. 6204036446 . if u want then come otherwise it's not liking a forcing ANYMORE . bcz that's why I'm telling that this app not uses much more. baaki aapki marzii [email protected]

Discussion

3.	Explain:equilibriumTranslational equilibriumRotational equilibriumStatic equilibrium
Answer» Answer: Equilibrium a state of rest or balance due to the equal action of opposing forces. equal balance between any powers, influences, etc.; equality of effect. mental or emotional balance; equanimity: The pressures of the situation caused her to lose her equilibrium. Explanation: Translational equilibrium An OBJECT is in translational equilibrium when the sum of all the external forces acting on the object equals ZERO. This also means an object is in translational equilibrium when it is experiencing zero overall acceleration. Therefore, it is either not moving or moving at a constant velocity. Rotational equilibrium An object is in rotational equilibrium if the velocity of its rotation is constant. An object that is not ROTATING or an object that is rotating in one direction a constant rate would be considered in rotational equilibrium. To be in rotational equilibrium, the NET TORQUE acting on the object must be zero. Static equilibrium An object is in static equilibrium if and only if: The sum of the forces on it in each direction is zero. The sum of the torques on it in each direction is zero

3.

Explain:equilibriumTranslational equilibriumRotational equilibriumStatic equilibrium

Answer»

Answer:

Equilibrium

a state of rest or balance due to the equal action of opposing forces. equal balance between any powers, influences, etc.; equality of effect. mental or emotional balance; equanimity: The pressures of the situation caused her to lose her equilibrium.

Explanation:

Translational equilibrium

An OBJECT is in translational equilibrium when the sum of all the external forces acting on the object equals ZERO. This also means an object is in translational equilibrium when it is experiencing zero overall acceleration. Therefore, it is either not moving or moving at a constant velocity.

Rotational equilibrium

An object is in rotational equilibrium if the velocity of its rotation is constant. An object that is not ROTATING or an object that is rotating in one direction a constant rate would be considered in rotational equilibrium. To be in rotational equilibrium, the NET TORQUE acting on the object must be zero.

Static equilibrium

An object is in static equilibrium if and only if: The sum of the forces on it in each direction is zero. The sum of the torques on it in each direction is zero

Discussion

4.	The intensity of sound is 10-6Wcm-1. If the loudness level of sound is increasedby 10db, what will be the new intensity?
Answer» Answer: B h BS s sc dvfvovifk and HEALTH education and training ty ty y kya BAAT hai rabata and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and experience Q IAM in the LINK for the link for the link for YOGA for science class link below for the link for yoga and Health education and training and Health education and training and Health education

4.

The intensity of sound is 10-6Wcm-1. If the loudness level of sound is increasedby 10db, what will be the new intensity?

Answer»

Answer:

B h BS s sc dvfvovifk and HEALTH education and training ty ty y kya BAAT hai rabata and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and training and Health education and experience Q IAM in the LINK for the link for the link for YOGA for science class link below for the link for yoga and Health education and training and Health education and training and Health education

Discussion

5.	Define Acceleration..??don't spam..
Answer» <STRONG>Answer: Thunderstorm, a violent short-lived weather disturbance that is almost ALWAYS associated with LIGHTNING, thunder, dense clouds, heavy rain or hail, and strong GUSTY winds. ... Thunderstorms arise when layers of warm, moist air rise in a LARGE, swift updraft to cooler regions of the atmosphere.

5.

Define Acceleration..??don't spam..

Answer»

<STRONG>Answer:

Thunderstorm, a violent short-lived weather disturbance that is almost ALWAYS associated with LIGHTNING, thunder, dense clouds, heavy rain or hail, and strong GUSTY winds. ... Thunderstorms arise when layers of warm, moist air rise in a LARGE, swift updraft to cooler regions of the atmosphere.

Discussion

6.	नाच रे मोराग. दि. माडगूळकरशिक्षकांची गाणे तालासुसल, साभिषय हान दाखवावे. शक्य असल्यास या गाण्याची वनिफीत एकवावी. गाणवानीएक एक ओळणावामाथि बियाण्यांकडून म्हपान घ्यावीनंतर स्वतलगंबर, गटात तसेच वैयक्तिकरीत्यागणेसालासुरात, बांबरोबर महणण्यास सांमागेएका बाणा (Listen and Say :)नाच रे मोरा, आंब्याच्या वनातनाच रे मोरा नाच ।ढगांशी वारा झंजला रेकाळा काळा कापूस पिंजला रेआता तुझी पाळीवीज देते टाळीफुलव पिसारा नाच ।। १ ।।झर झर धार झरली रेझाडांची भिजली इरली रेपावसात न्हाऊकाहीतरी गाऊकरून पुकारा नाच ।। २।।थेंब थेंब तळ्यात नाचती रेटपटप पानात वाजती रेपावसाच्या रेघातखेळ खेळू दोघांतनिळ्या सौंगड्या नाच ।।३।।पावसाची रिमझिम थांबली रेतुझी माझी जोडी जमली रे.७०60७८आभाळात छान छान७९JOHTENMENTसात रंगी कमानकमानीखाली त्या नाच।। ४।।८२८६.वाचा : (Read :) write 2 time
Answer» ANSWER: I feel LIKE a good person to be with the people I CARE

6.

नाच रे मोराग. दि. माडगूळकरशिक्षकांची गाणे तालासुसल, साभिषय हान दाखवावे. शक्य असल्यास या गाण्याची वनिफीत एकवावी. गाणवानीएक एक ओळणावामाथि बियाण्यांकडून म्हपान घ्यावीनंतर स्वतलगंबर, गटात तसेच वैयक्तिकरीत्यागणेसालासुरात, बांबरोबर महणण्यास सांमागेएका बाणा (Listen and Say :)नाच रे मोरा, आंब्याच्या वनातनाच रे मोरा नाच ।ढगांशी वारा झंजला रेकाळा काळा कापूस पिंजला रेआता तुझी पाळीवीज देते टाळीफुलव पिसारा नाच ।। १ ।।झर झर धार झरली रेझाडांची भिजली इरली रेपावसात न्हाऊकाहीतरी गाऊकरून पुकारा नाच ।। २।।थेंब थेंब तळ्यात नाचती रेटपटप पानात वाजती रेपावसाच्या रेघातखेळ खेळू दोघांतनिळ्या सौंगड्या नाच ।।३।।पावसाची रिमझिम थांबली रेतुझी माझी जोडी जमली रे.७०60७८आभाळात छान छान७९JOHTENMENTसात रंगी कमानकमानीखाली त्या नाच।। ४।।८२८६.वाचा : (Read :) write 2 time

Answer»

ANSWER:

I feel LIKE a good person to be with the people I CARE

Discussion

7.	खुद-ब-खुद शामिल हो गए तुम मेरी साँसों में,हम सोच के करते तो फिर मोहब्बत न करते।it is Shreya real dpsingle ...
Answer» ANSWER: EXPLANATION: i am SINGLE

7.

खुद-ब-खुद शामिल हो गए तुम मेरी साँसों में,हम सोच के करते तो फिर मोहब्बत न करते।it is Shreya real dpsingle ...

Answer»

ANSWER:

EXPLANATION:

i am SINGLE

Discussion

8.	Explain:equilibriumTranslational equilibriumRotational equilibriumStatic equilibriumDynamic equilibriumwith examples
Answer» Explanation: a state of rest or balance due to the equal action of opposing forces. equal balance between any powers, influences, etc.; equality of effect. mental or emotional balance; equanimity: The pressures of the situation caused her to lose her equilibrium. An object is in translational equilibrium when the SUM of all the external forces acting on the object equals zero. This also MEANS an object is in translational equilibrium when it is experiencing zero overall acceleration. Therefore, it is either not MOVING or moving at a CONSTANT VELOCITY.

8.

Explain:equilibriumTranslational equilibriumRotational equilibriumStatic equilibriumDynamic equilibriumwith examples

Answer»

Explanation:

a state of rest or balance due to the equal action of opposing forces. equal balance between any powers, influences, etc.; equality of effect. mental or emotional balance; equanimity: The pressures of the situation caused her to lose her equilibrium.

An object is in translational equilibrium when the SUM of all the external forces acting on the object equals zero. This also MEANS an object is in translational equilibrium when it is experiencing zero overall acceleration. Therefore, it is either not MOVING or moving at a CONSTANT VELOCITY.

Discussion

9.	When 100 Joule of heat is given to a gaseous system, then internal energyincreases by 30 Joule. Find the work done by the system.
Answer» ANSWER: ∆H=∆U+W W=∆H-∆U W=100-30 W=70 JOULES

9.

When 100 Joule of heat is given to a gaseous system, then internal energyincreases by 30 Joule. Find the work done by the system.

Answer»

ANSWER:

∆H=∆U+W

W=∆H-∆U

W=100-30

W=70 JOULES

Discussion

10.	A train is moving with a velocity of 18 km/h in 5 mins. Find itsacceleration and distance covered by the train
Answer» Explanation: Given :- Initial VELOCITY u = 0 Final Velocity v= 18 km/hr = 5 m/s Time t = 5 min = 300 sec Distance S = ? Acceleration a = ? Using First EQUATION of MOTION v = u + at 5 = 0 + a × 300 a = 5 / 300 = 0.016 m/s² Using Second equation of motion S = UT + 1/2 at² S = 0 × 300 + 1/2 × 0.016 × (300)² S = 1/2 × 0.016 × 300 × 300 S = 750 m

10.

A train is moving with a velocity of 18 km/h in 5 mins. Find itsacceleration and distance covered by the train

Answer»

Explanation:

Given :-

Initial VELOCITY u = 0
Final Velocity v= 18 km/hr = 5 m/s
Time t = 5 min = 300 sec
Distance S = ?
Acceleration a = ?

Using First EQUATION of MOTION

v = u + at
5 = 0 + a × 300
a = 5 / 300 = 0.016 m/s²

Using Second equation of motion

S = UT + 1/2 at²
S = 0 × 300 + 1/2 × 0.016 × (300)²
S = 1/2 × 0.016 × 300 × 300
S = 750 m

Discussion

11.	If mass M and radius of solid sphere is R, then moment of Inertia aboutdiameter is :22.(A) {MR(B) MRMR2(D) {MR(c) MR
Answer» EXPLANATION: MR²/2 wish you will DROP some THANKS and MARK it BRAINLIST

11.

If mass M and radius of solid sphere is R, then moment of Inertia aboutdiameter is :22.(A) {MR(B) MRMR2(D) {MR(c) MR

Answer»

EXPLANATION:

MR²/2

wish you will DROP some THANKS

and MARK it BRAINLIST

Discussion

12.	1528In perfect inelastic collision :(A) Both Momentum and K. E. are conserved(B)Both Momentum and Kinetic Energy are not conserved(C) Momentum is conserved and Kinetic Energy is not conserved(D) Momentum is not conserved and Kinetic Energy is conserved
Answer» Answer: An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision. Both momentum and kinetic energy are CONSERVED quantities in elastic collisions. Suppose two SIMILAR TROLLEYS are traveling toward each other with equal speed. They collide, bouncing off each other with no loss in speed. This collision is perfectly elastic because no energy has been LOST.

12.

1528In perfect inelastic collision :(A) Both Momentum and K. E. are conserved(B)Both Momentum and Kinetic Energy are not conserved(C) Momentum is conserved and Kinetic Energy is not conserved(D) Momentum is not conserved and Kinetic Energy is conserved

Answer»

Answer:

An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision. Both momentum and kinetic energy are CONSERVED quantities in elastic collisions.

Suppose two SIMILAR TROLLEYS are traveling toward each other with equal speed. They collide, bouncing off each other with no loss in speed. This collision is perfectly elastic because no energy has been LOST.

Discussion

13.	(6)Which friction is maximum ?(A) Static Friction(B) Limiting Frictic(C) Kinetic Friction(D) None
Answer» ANSWER: STATIC FRICTION is the answer to your QUESTIONS

13.

(6)Which friction is maximum ?(A) Static Friction(B) Limiting Frictic(C) Kinetic Friction(D) None

Answer»

ANSWER:

STATIC FRICTION is the answer to your QUESTIONS

Discussion

14.	A satellite is revolving around the earth at a height of 6X105m.Find(a) The speed of the satellite and(b) The time period of the satellite.It is given radius of the earth is 6.4 X 106 m and mass of the earth is 6 X 1024 kg.How detergent removes dirt from the clothes?
Answer» Answer: see explanation for that Explanation: it's so simple bruh first multiply 6.4 ×106 ÷6×1024 then DIVIDE the result by 69420 and then multiply the result by 776677638 which GIVES the answer around 77788832300474 and then multiply this with 6666622339 - 446-677-6+5÷5-5×5 then u got UR answer as 69 hence PROVED that detergent doesn't clean the clothes your mother does hope it helps you

14.

A satellite is revolving around the earth at a height of 6X105m.Find(a) The speed of the satellite and(b) The time period of the satellite.It is given radius of the earth is 6.4 X 106 m and mass of the earth is 6 X 1024 kg.How detergent removes dirt from the clothes?

Answer»

Answer:

see explanation for that

Explanation:

it's so simple bruh

first multiply 6.4 ×106 ÷6×1024 then DIVIDE the result by 69420 and then multiply the result by 776677638 which GIVES the answer around 77788832300474 and then multiply this with 6666622339 - 446-677-6+5÷5-5×5 then u got UR answer as 69

hence PROVED that

detergent doesn't clean the clothes your mother does hope it helps you

Discussion

15.	Two objects A and B of masses 2 kg and 10 kg respectively are movingwith same velocity. The ratio of their momentum will be:(A) 1:1(B) 1.5(C) 5:1(D) 1:25
Answer» Answer: 1:5 Explanation: MOMENTUM = mv Momentum of A = 2V Momentum of B = 10V RATIO of Momentum = 2v / 10v = 2/10 = 1/5 Therefore ratio = 1:5

15.

Two objects A and B of masses 2 kg and 10 kg respectively are movingwith same velocity. The ratio of their momentum will be:(A) 1:1(B) 1.5(C) 5:1(D) 1:25

Answer»

Answer:

1:5

Explanation:

MOMENTUM = mv

Momentum of A = 2V

Momentum of B = 10V

RATIO of Momentum = 2v / 10v

= 2/10 = 1/5

Therefore ratio = 1:5

Discussion

16.	एक होज पाइप जमीन पर से पानी की धारा को क्षैतिज60° के कोण पर ऊपर उठाता है। इससे निकले पानीकी धारा इसे 40 मी०/से० के वेग से इसे छोड़ती है। यह20 मीटर दूर पर स्थित दीवार से कितनी ऊँचाई परटकरायेगा-
Answer» ANSWER: I don't KNOW!!!!!!!!!!!!!!!!!!!!!!!!

16.

एक होज पाइप जमीन पर से पानी की धारा को क्षैतिज60° के कोण पर ऊपर उठाता है। इससे निकले पानीकी धारा इसे 40 मी०/से० के वेग से इसे छोड़ती है। यह20 मीटर दूर पर स्थित दीवार से कितनी ऊँचाई परटकरायेगा-

Answer»

ANSWER:

I don't KNOW!!!!!!!!!!!!!!!!!!!!!!!!

Discussion

17.	For a sine wave RMS current is 70.7 A andaverage current is 63.7 A , then its formfactor isall10.91.110
Answer» PLEASE TOP Up 5000 Diamonds In FREE Fire Id 1260020610 Top Up From Codashop Or Garena Free Fire Top Up Center Please Do Justice To Me Please Mark As BRAINLIEST ANSWER !

17.

For a sine wave RMS current is 70.7 A andaverage current is 63.7 A , then its formfactor isall10.91.110

Answer»

PLEASE TOP Up 5000 Diamonds In FREE Fire Id 1260020610 Top Up From Codashop Or Garena Free Fire Top Up Center Please Do Justice To Me

Please Mark As BRAINLIEST ANSWER !

Discussion

18.	Draw a ray digram to show a virtual image of 2/5th the size of an object 4cm high , using a spherical mirror. mark the position of the image formed?
Answer» ANSWER: age apni ey gown ta AMAY kine DIN tarpor AMI QUESTION er answer debo

18.

Draw a ray digram to show a virtual image of 2/5th the size of an object 4cm high , using a spherical mirror. mark the position of the image formed?

Answer»

ANSWER:

age apni ey gown ta AMAY kine DIN tarpor AMI QUESTION er answer debo

Discussion

19.	14. Read the information table and answer the following questionsSolutionpH valueReaction withPhenolphthaleinsolutionReaction with MethylOrange solutionHCI1No colour changeTurns into red colour.Distilled water7No colour changeNo colour changeNaOH13Turns into pink colourTurnsinto yellow colourTurns into red colourLemon juice2.5No colour changeNaci7No colour change.No colour changeTurns into yellow colour.Baking Soda8Turns into pink coloura) List out the acids in the above table.b) What is the nature of the solution which gives pink colour with Phenolphthaleinsolution ?c) List out the neutral solutions in the above tabled) Name the strongest acid and the strongest base among the given solutions
Answer» ANSWER: Turns into pink colour a) LIST out the ACIDS in the above table. b) What is the nature of the solution which gives pink colour with Phenolphthalein solution ? c) List out the NEUTRAL solutions in the above table d) Name the STRONGEST acid and the strongest base among the given solutio

19.

14. Read the information table and answer the following questionsSolutionpH valueReaction withPhenolphthaleinsolutionReaction with MethylOrange solutionHCI1No colour changeTurns into red colour.Distilled water7No colour changeNo colour changeNaOH13Turns into pink colourTurnsinto yellow colourTurns into red colourLemon juice2.5No colour changeNaci7No colour change.No colour changeTurns into yellow colour.Baking Soda8Turns into pink coloura) List out the acids in the above table.b) What is the nature of the solution which gives pink colour with Phenolphthaleinsolution ?c) List out the neutral solutions in the above tabled) Name the strongest acid and the strongest base among the given solutions

Answer»

ANSWER:

Turns into pink colour

a) LIST out the ACIDS in the above table.

b) What is the nature of the solution which gives pink colour with Phenolphthalein

solution ?

c) List out the NEUTRAL solutions in the above table

d) Name the STRONGEST acid and the strongest base among the given solutio

Discussion

20.	A student conducts an experiment using a convex lens of focal length 20 cm and anobject of height 15 cm. He placed the object at 25 cm from the lens. Can the imagebe formed on a screen? Where should the screen be placed in order to get thesharpest image?
Answer» Explanation: Hello, Here, f - focal length V - image distance u - OBJECT distance and ALSO, I have no idea why there is height of the object mentioned as there is no USE in this sum as far as my knowledge. anyways have a great DAY!!! : )

20.

A student conducts an experiment using a convex lens of focal length 20 cm and anobject of height 15 cm. He placed the object at 25 cm from the lens. Can the imagebe formed on a screen? Where should the screen be placed in order to get thesharpest image?

Answer»

Explanation:

Hello,

Here,

f - focal length

V - image distance

u - OBJECT distance

and ALSO, I have no idea why there is height of the object mentioned as there is no USE in this sum as far as my knowledge.

anyways have a great DAY!!!

: )

Discussion

21.	48CodingYou are given N Candles and the lengthof each Candle is stored arrageThe Candles will form ain antriplet itA[i]>A[j]>A[k] and i
Answer» ANSWER: yfgcjbyf7hhcyguvgguyfyvtd6

21.

48CodingYou are given N Candles and the lengthof each Candle is stored arrageThe Candles will form ain antriplet itA[i]>A[j]>A[k] and i

Answer»

ANSWER:

yfgcjbyf7hhcyguvgguyfyvtd6

Discussion

22.	. The velocity of a body with a mass of 100 kg increases from 4 m/s to 8 m/s whena force acts on it for 2 s. Answer the following questions:(5 marks)a) Calculate the momentum before the force acts on the body.b) What is the momentum after the force acts on the body?c) What is the gain in momentum per second?d) Calculate the value of the force.
Answer» Answer: Mass of the BODY =10 kg Initial VELOCITY u=4 m/s Final velocity v=8 m/s Time t=2s a) Momentum before force ACTS p 1 =m×u=10×4=40kg.m/s b) Momentum after force acts p 2 =m×v=10×8=80kg.m/s c) GAIN in momentum per second = 2 40 =20kg.m/s d) Acceleration a= t v−u = 2 8−4 =2m/s 2 Force =m×a=10×2 =20N

22.

. The velocity of a body with a mass of 100 kg increases from 4 m/s to 8 m/s whena force acts on it for 2 s. Answer the following questions:(5 marks)a) Calculate the momentum before the force acts on the body.b) What is the momentum after the force acts on the body?c) What is the gain in momentum per second?d) Calculate the value of the force.

Answer»

Answer:

Mass of the BODY =10 kg

Initial VELOCITY u=4 m/s

Final velocity v=8 m/s

Time t=2s

a) Momentum before force ACTS p

1

=m×u=10×4=40kg.m/s

b) Momentum after force acts p

2

=m×v=10×8=80kg.m/s

c) GAIN in momentum per second =

2

40

=20kg.m/s

d) Acceleration a=

t

v−u

=

2

8−4

=2m/s

2

Force =m×a=10×2 =20N

Discussion

23.	Not Answered in this PART : 106. If Numerical aperture is0.26, refractive index is 1.5 andcore diameter is 100 pm, thenrefractive index of cladding isAnswers :
Answer» ANSWER: Not Answered in this PART : 10 6. If Numerical APERTURE is 0.26, REFRACTIVE index is 1.5 and core DIAMETER is 100 pm, then refractive index of CLADDING is

23.

Not Answered in this PART : 106. If Numerical aperture is0.26, refractive index is 1.5 andcore diameter is 100 pm, thenrefractive index of cladding isAnswers :

Answer»

ANSWER:

Not Answered in this PART : 10

6. If Numerical APERTURE is

0.26, REFRACTIVE index is 1.5 and

core DIAMETER is 100 pm, then

refractive index of CLADDING is

Discussion

24.	The principle involved in the working of a jet plane(a)Law of conservation of momentum (b)Newton's first law of motion (c)Newton's second law of motion (d)Law of gravitation
Answer» Answer: a) law of conservation of momentum . Explanation: in the jet plane the jet plane MOVE FORWARD and the GASES move out of nozzles go in backward direction. so they CANCEL the effect of each other.and momentum remains conserve.

24.

The principle involved in the working of a jet plane(a)Law of conservation of momentum (b)Newton's first law of motion (c)Newton's second law of motion (d)Law of gravitation

Answer»

Answer:

a) law of conservation of momentum .

Explanation:

in the jet plane the jet plane MOVE FORWARD and the GASES move out of nozzles go in backward direction. so they CANCEL the effect of each other.and momentum remains conserve.

Discussion

25.	ਦ੫੫॥ਪਰਮਾਤਮਾ ਦੀ ਕਿਰਪਾ ਕਿਨ੍ਹਾਂ ਉੱਤੇ ਹੁੰਦੀ ਹੈ?(ਉ) ਮਨਮੁੱਖਾਂ ਉੱਤੇ(ਈ ਗੁਰਮੁੱਖਾਂ ਉੱਤੇ(ਅ) ਹੰਕਾਰੀਆਂ ਉੱਤੇ(ਸ) ਗਰੀਬਾਂ ਉੱਤੇJ॥
Answer» ਪਰਮਾਤਮਾ ਦੀ ਕਿਰਪਾ ਗੁਰਮੁੱਖਾਂ ਉੱਤੇ ਹੁੰਦੀ ਹੈ\|

Discussion

26.	There are two resistances of 3 ohm and 5 ohm. Whichof the resistances will be hotter, if the two resistances joined:(i) in series and(ii) in parallel are connected to a cell ?
Answer» Answer: (i)in series,5ohm resistor will be hot. Because in series connection current has only ONE path to FLOW.Since current and resistance are DIRECTLY proportional to heat (H=I^RT) and current is constant in this case,so obviously heat depends on resistance.Since resistance is more for 5ohm,more heat will be developed on it. (ii)In parallel,3ohm will be hotter than 5ohm. This is because in parallel connection,current has many paths to flow.So obviously current will take the path that has less resistance.(current can flow EASILY through a path that has less resistance,that's why)So it will flow through the 3ohm resistor.Again,as resistance , current and heat are directly proportional.More current means more heat.So 3ohm will be hot. Please mark as BRAINLIEST

26.

There are two resistances of 3 ohm and 5 ohm. Whichof the resistances will be hotter, if the two resistances joined:(i) in series and(ii) in parallel are connected to a cell ?

Answer»

Answer:

(i)in series,5ohm resistor will be hot.

Because in series connection current has only ONE path to FLOW.Since current and resistance are DIRECTLY proportional to heat (H=I^RT) and current is constant in this case,so obviously heat depends on resistance.Since resistance is more for 5ohm,more heat will be developed on it.

(ii)In parallel,3ohm will be hotter than 5ohm.

This is because in parallel connection,current has many paths to flow.So obviously current will take the path that has less resistance.(current can flow EASILY through a path that has less resistance,that's why)So it will flow through the 3ohm resistor.Again,as resistance , current and heat are directly proportional.More current means more heat.So 3ohm will be hot.

Please mark as BRAINLIEST

Discussion

27.	Gravitational force between two-point objects having masses m1 and m2 separated bydistance ‘r’ from their centres is (A)Directly proportional to product of their masses and inversely proportional to distance between their centers (B) Directly proportional to product of their masses and is independent of distance between the masses. (C) Depends on distance between the masses and is independent of magnitude of masses (D)Directly proportional to product of their masses and inversely proportional to square of distance between bodies
Answer» ANSWER: D is the RIGHT REQUIRED answer of this QUESTION

27.

Gravitational force between two-point objects having masses m1 and m2 separated bydistance ‘r’ from their centres is (A)Directly proportional to product of their masses and inversely proportional to distance between their centers (B) Directly proportional to product of their masses and is independent of distance between the masses. (C) Depends on distance between the masses and is independent of magnitude of masses (D)Directly proportional to product of their masses and inversely proportional to square of distance between bodies

Answer»

ANSWER:

D is the RIGHT REQUIRED answer of this QUESTION

Discussion

28.	) A solution has 50g of salt in 320g of water. Calculate the mass percent of the salt in the solution. ii) Name any one Metalloid. iii) What type of change is cutting of wood.
Answer» ANSWER :- 1 Mass of salt = 50 g Mass of water = 320 g Mass of solution = 320 + 50 ㅤㅤㅤㅤ‎‎‎‎ㅤㅤㅤ= 370 g $\sf {Mass \; \% \; of \; salt \; in \; solution \; = {\dfrac { Mass \; of \; salt}{Mass \; of \; solution } \times 100 }}$ ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ $: \implies \sf { \dfrac {50}{370} \times 100}$ ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ $: \implies \sf { 13.51 \%}$ ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ ㅤ‎‎‎‎ㅤㅤㅤ━━━━━━━━━━━━━━━━━━━━ Answer :- 2 Boron, Silicon, GERMANIUM etc. ㅤ‎‎‎‎ㅤㅤ━━━━━━━━━━━━━━━━━━━━━ ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ Answer :- 3 Physical Change because no new SUBSTANCE is formed. ㅤ‎‎‎‎ㅤㅤ━━━━━━━━━━━━━━━━━━━━━

28.

) A solution has 50g of salt in 320g of water. Calculate the mass percent of the salt in the solution. ii) Name any one Metalloid. iii) What type of change is cutting of wood.

Answer»

ANSWER :- 1

Mass of salt = 50 g

Mass of water = 320 g

Mass of solution = 320 + 50

ㅤㅤㅤㅤ‎‎‎‎ㅤㅤㅤ= 370 g

$\sf {Mass \; \% \; of \; salt \; in \; solution \; = {\dfrac { Mass \; of \; salt}{Mass \; of \; solution } \times 100 }}$

ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ $: \implies \sf { \dfrac {50}{370} \times 100}$

ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ $: \implies \sf { 13.51 \%}$

ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ

ㅤ‎‎‎‎ㅤㅤㅤ━━━━━━━━━━━━━━━━━━━━

Answer :- 2

Boron, Silicon, GERMANIUM etc.

ㅤ‎‎‎‎ㅤㅤ━━━━━━━━━━━━━━━━━━━━━

ㅤ‎‎‎‎ㅤㅤㅤㅤㅤ

Answer :- 3

Physical Change because no new SUBSTANCE is formed.

ㅤ‎‎‎‎ㅤㅤ━━━━━━━━━━━━━━━━━━━━━

Discussion

29.	Find the force of the object with mass as 300kg and acceleration as 50 m/s2.pl tell me the answer
Answer» Answer: 15000 N Explanation: GIVEN: mass = m = 300KG acceleration = a = 50m/s2 therefore, FORCE = F = ma = 300 × 50 = 15000N

29.

Find the force of the object with mass as 300kg and acceleration as 50 m/s2.pl tell me the answer

Answer»

Answer:

15000 N

Explanation:

GIVEN: mass = m = 300KG

acceleration = a = 50m/s2

therefore, FORCE = F = ma

= 300 × 50

= 15000N

Discussion

30.	Un burnt Carbon particles are released on combustion of a)Solid fuelsb)liquid fuelsc)gaseous fuelsd)all of these
Answer» ANSWER: LIQUID FUELS I guess please SPARE me if it's WRONG

30.

Un burnt Carbon particles are released on combustion of a)Solid fuelsb)liquid fuelsc)gaseous fuelsd)all of these

Answer»

ANSWER:

LIQUID FUELS I guess

please SPARE me if it's WRONG

Discussion

31.	The motion of a car is represented by The Graph given here. It is a Velocity-Time graph.(1)Identify the type of motion from the following(A) car is not in motion(B) car is moving with uniform velocity(C) car is moving with uniform acceleration(D) None of the above(ii)What does the slope of the graph represent?(A) acceleration(B) velocity(C) force(D) momentum(iii) What kind of graph do we obtain if we plot position - time graph of the car(A) Straight line parallel to X axis(B) Straight line parallel to Y axis(C) parabola(D) Zig Zag curve(iv) What quantity do we obtain if we calculate area under the given graph?(A)displacement(B) velocity(C) acceleration
Answer» ANSWER: i) (C) the car is MOVING with uniform acceleration ii) (A) acceleration iii) (C) parabola iv) (A) displacement tried my best to EXPLAIN, hope its helpful! EXPLANATION: i) As it is velocity-time graph, it SHOWS how velocity is changing with time. Acceleration is rate of change of velocity. As is a straight line, it is uniform acceleration. ii) same explanation as (i) iii) position-time graph gives us velocity. so according to this situation, velocity is changing uniformly. so, we get a parabola for s-t graph iv) area under velocity-time graph always gives us 'displacement' (velocity= displacement/ time)

31.

The motion of a car is represented by The Graph given here. It is a Velocity-Time graph.(1)Identify the type of motion from the following(A) car is not in motion(B) car is moving with uniform velocity(C) car is moving with uniform acceleration(D) None of the above(ii)What does the slope of the graph represent?(A) acceleration(B) velocity(C) force(D) momentum(iii) What kind of graph do we obtain if we plot position - time graph of the car(A) Straight line parallel to X axis(B) Straight line parallel to Y axis(C) parabola(D) Zig Zag curve(iv) What quantity do we obtain if we calculate area under the given graph?(A)displacement(B) velocity(C) acceleration

Answer»

ANSWER:

i) (C) the car is MOVING with uniform acceleration

ii) (A) acceleration

iii) (C) parabola

iv) (A) displacement

tried my best to EXPLAIN, hope its helpful!

EXPLANATION:

i) As it is velocity-time graph, it SHOWS how velocity is changing with time. Acceleration is rate of change of velocity. As is a straight line, it is uniform acceleration.

ii) same explanation as (i)

iii) position-time graph gives us velocity. so according to this situation, velocity is changing uniformly. so, we get a parabola for s-t graph

iv) area under velocity-time graph always gives us 'displacement' (velocity= displacement/ time)

Discussion

32.	Read the following and answer any four questions from 19 (i) to 19 (v)Balanced Forces when act on a body, the body either continues the state of rest or Uniform motion. Unbalanced force may change the state of an object and produces acceleration. A property called inertia is the inherent property of an object which resists any change in the state of the body when force is applied. Mass of an object is measure of inertia. 1x 4 19 (i) An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force is acting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton 19 (ii) The net force acting on theobject in figure is (A) zero (B) 2N right side of the body (C) 2N left side of the body (D) None 19 (iii) Which of the following has least inertia (A) A tennis ball (B) A cricket ball (C) A bicycle (D) A car 19(iv) A passenger falls forward when a moving bus suddenly stops, This can be explained using(A) Inertia of rest (B) Inertia of motion (C) inertia of direction (D) None 19 (v) A rolling object stops because of(A) Balanced force (B) Unbalanced force
Answer» Answer: 1(c). 10N 2(a) 0 3(a) tennis ball 4(B)inertia of the motion 5(b) UNBALANCED FORCE

32.

Read the following and answer any four questions from 19 (i) to 19 (v)Balanced Forces when act on a body, the body either continues the state of rest or Uniform motion. Unbalanced force may change the state of an object and produces acceleration. A property called inertia is the inherent property of an object which resists any change in the state of the body when force is applied. Mass of an object is measure of inertia. 1x 4 19 (i) An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force is acting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton 19 (ii) The net force acting on theobject in figure is (A) zero (B) 2N right side of the body (C) 2N left side of the body (D) None 19 (iii) Which of the following has least inertia (A) A tennis ball (B) A cricket ball (C) A bicycle (D) A car 19(iv) A passenger falls forward when a moving bus suddenly stops, This can be explained using(A) Inertia of rest (B) Inertia of motion (C) inertia of direction (D) None 19 (v) A rolling object stops because of(A) Balanced force (B) Unbalanced force

Answer»

Answer:

1(c). 10N

2(a) 0

3(a) tennis ball

4(B)inertia of the motion

5(b) UNBALANCED FORCE

Discussion

33.	Define kinetic Energy, write expressionfore kinetic Energy A force of 12 N acts onobjectof mass of 4 kg in the stateof rest for 3s. calculate the kineticenergy acquired by the objectan
Answer» Answer: DONT know EXPLANATION: sry... ND THX for points

33.

Define kinetic Energy, write expressionfore kinetic Energy A force of 12 N acts onobjectof mass of 4 kg in the stateof rest for 3s. calculate the kineticenergy acquired by the objectan

Answer»

Answer:

DONT know

EXPLANATION:

sry... ND THX for points

Discussion

34.	Which reduces the force acting on the body to athletes and they arenot hurt.a. The change on momentum takes place over a long duration.b. They change in momentum takes place over a short durationc. The change in acceleration takes place over a long duration.d. The change in acceleration taken place over a short duration
Answer» Answer: c.The change in acceleration TAKES PLACE over a LONG duration. Explanation: mark as brainliest

34.

Which reduces the force acting on the body to athletes and they arenot hurt.a. The change on momentum takes place over a long duration.b. They change in momentum takes place over a short durationc. The change in acceleration takes place over a long duration.d. The change in acceleration taken place over a short duration

Answer»

Answer:

c.The change in acceleration TAKES PLACE over a LONG duration.

Explanation:

mark as brainliest

Discussion

35.	EFor the circuit shown above, with R, = 1.0 2 approx. R = 2.0 2, Ę = 2 V and E, = E = 4 V. Calculatethe approx, potential difference between the points 'a' and 'b
Answer» Answer: 3.3 Explanation: Eeq=E1/2R1+E2/R2+E3/2R1 ---------------------------------- 1/2R1+1/R2+1/2R1 =2/2+4/2+4/2 ------------------- 1/2+1/2+1/2 =5/3 ------- 2 = 10 ------- 3 =3.3

35.

EFor the circuit shown above, with R, = 1.0 2 approx. R = 2.0 2, Ę = 2 V and E, = E = 4 V. Calculatethe approx, potential difference between the points 'a' and 'b

Answer»

Answer:

3.3

Explanation:

Eeq=E1/2R1+E2/R2+E3/2R1

----------------------------------

1/2R1+1/R2+1/2R1

=2/2+4/2+4/2

-------------------

1/2+1/2+1/2

=5/3

-------

2

= 10

-------

3

=3.3

Discussion

36.	Read the following and answer any four questions from 19 (i) to 19 (v)Balanced Forces when act on a body, the body either continues the state of rest or Uniform motion. Unbalanced force may change the state of an object and produces acceleration. A property called inertia is the inherent property of an object which resists any change in the state of the body when force is applied. Mass of an object is measure of inertia. 19 (i) An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force is acting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton
Answer» ANSWER: OPTION (C) is correct 10 NEWTON

36.

Read the following and answer any four questions from 19 (i) to 19 (v)Balanced Forces when act on a body, the body either continues the state of rest or Uniform motion. Unbalanced force may change the state of an object and produces acceleration. A property called inertia is the inherent property of an object which resists any change in the state of the body when force is applied. Mass of an object is measure of inertia. 19 (i) An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force is acting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton

Answer»

ANSWER:

OPTION (C) is correct

10 NEWTON

Discussion

37.	What is youth?....Accha toh tu voh mr mad hai jisse pari inne baate karti reheti hain......Bade lucky ho aap... hume toh saala ignore hi karti reheti hai...
Answer» Answer: YOUTH is the time of LIFE when one is young, and often MEANS the time between CHILDHOOD and adulthood (maturity). It is also defined as "the appearance, freshness, vigor, spirit, ETC., characteristic of one who is young".

37.

What is youth?....Accha toh tu voh mr mad hai jisse pari inne baate karti reheti hain......Bade lucky ho aap... hume toh saala ignore hi karti reheti hai...

Answer»

Answer:

YOUTH is the time of LIFE when one is young, and often MEANS the time between CHILDHOOD and adulthood (maturity). It is also defined as "the appearance, freshness, vigor, spirit, ETC., characteristic of one who is young".

Discussion

38.	The Indication of3. A leady of mass song has a momentum of 10 agnusenergy is@ 10 10 @ 10% @ 103its kinetic
Answer» ANSWER: I don't KNOW this QUESTION

38.

The Indication of3. A leady of mass song has a momentum of 10 agnusenergy is@ 10 10 @ 10% @ 103its kinetic

Answer»

ANSWER:

I don't KNOW this QUESTION

Discussion

39.	) Two isotopes of Uranium have 92 electrons each and have 144, 148 neutrons respectively.Mass numbers of these two isotopes will be respectively
Answer» ANSWER: If one of the zeroes of the cubic POLYNOMIAL X3 + ax2 + bx + C is -1, then the product of the other two zeroes isIf one of the zeroes of the cubic polynomial x3 + ax2 + bx + c is -1, then the product of the other two zeroes is

39.

) Two isotopes of Uranium have 92 electrons each and have 144, 148 neutrons respectively.Mass numbers of these two isotopes will be respectively

Answer»

ANSWER:

If one of the zeroes of the cubic POLYNOMIAL X3 + ax2 + bx + C is -1, then the product of the other two zeroes isIf one of the zeroes of the cubic polynomial x3 + ax2 + bx + c is -1, then the product of the other two zeroes is

Discussion

40.	Which of the Following relation gives Wiedemann-Franz law.A) k/oT =Constant B) ko/T=ConstantC) OKT- Constant D) KT/o-Constant
Answer» ɧɛƖƖơ ɱąɬɛ Answer: A) k/σT =Constant ________________________ Explanation: ᴡʜᴀᴛ ɪs ᴡɪᴇᴅᴇᴍᴀɴɴ Fʀᴀɴᴢ ʟᴀᴡ ?? ᴛʜᴇ ᴡɪᴇᴅᴇᴍᴀɴɴ Fʀᴀɴᴢ ʟᴀᴡ ɪs ᴛʜᴇ ʀᴀᴛɪᴏ ᴏF ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏɴɪᴄ ᴄᴏɴᴛʀɪʙᴜᴛɪᴏɴ ᴏF ᴛʜᴇ ᴛʜᴇʀᴍᴀʟ ᴄᴏɴᴅᴜᴄᴛɪᴠɪᴛʏ (ᴋ) ᴛᴏ ᴛʜᴇ ᴇʟᴇᴄᴛʀɪᴄᴀʟ ᴄᴏɴᴅᴜᴄᴛɪᴠɪᴛʏ (Σ) ᴏF ᴀ ᴍᴇᴛᴀʟ, ᴀɴᴅ ɪs ᴘʀᴏᴘᴏʀᴛɪᴏɴᴀʟ ᴛᴏ ᴛʜᴇ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ (ᴛ) ________________________ ᴇQᴜᴀᴛɪᴏɴ: k/σ=LT ________________________ ɧơ℘ɛ ıɬ ɧɛƖ℘ʂ ყơų ☺

40.

Which of the Following relation gives Wiedemann-Franz law.A) k/oT =Constant B) ko/T=ConstantC) OKT- Constant D) KT/o-Constant

Answer»

ɧɛƖƖơ ɱąɬɛ

Answer:

A) k/σT =Constant

________________________

Explanation:

ᴡʜᴀᴛ ɪs ᴡɪᴇᴅᴇᴍᴀɴɴ Fʀᴀɴᴢ ʟᴀᴡ ??

ᴛʜᴇ ᴡɪᴇᴅᴇᴍᴀɴɴ Fʀᴀɴᴢ ʟᴀᴡ ɪs ᴛʜᴇ ʀᴀᴛɪᴏ ᴏF ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏɴɪᴄ ᴄᴏɴᴛʀɪʙᴜᴛɪᴏɴ ᴏF ᴛʜᴇ ᴛʜᴇʀᴍᴀʟ ᴄᴏɴᴅᴜᴄᴛɪᴠɪᴛʏ (ᴋ) ᴛᴏ ᴛʜᴇ ᴇʟᴇᴄᴛʀɪᴄᴀʟ ᴄᴏɴᴅᴜᴄᴛɪᴠɪᴛʏ (Σ) ᴏF ᴀ ᴍᴇᴛᴀʟ, ᴀɴᴅ ɪs ᴘʀᴏᴘᴏʀᴛɪᴏɴᴀʟ ᴛᴏ ᴛʜᴇ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ (ᴛ)

________________________

ᴇQᴜᴀᴛɪᴏɴ:

k/σ=LT

________________________

ɧơ℘ɛ ıɬ ɧɛƖ℘ʂ ყơų ☺

Discussion

41.	Which of the following has least inertia(A) A tennis ball (B) A cricket ball (C) A bicycle (D) A car
Answer» ANSWER: SORRY sorry I don't KNOW

41.

Which of the following has least inertia(A) A tennis ball (B) A cricket ball (C) A bicycle (D) A car

Answer»

ANSWER:

SORRY sorry I don't KNOW

Discussion

42.	(b) F.2.1 shows a submarine. The submarine is fully submerged in the sea.hatchtop surfacesubmarineFig. 2.1(i) The atospheric pressure is 100kPa and the total pressure on the top surface of thesubmar ais 500 kPa.Calculate depth of the top surface of the submarine below the surface of the sea.
Answer» ANSWER: I don't KNOW this QUESTION is very BIG

42.

(b) F.2.1 shows a submarine. The submarine is fully submerged in the sea.hatchtop surfacesubmarineFig. 2.1(i) The atospheric pressure is 100kPa and the total pressure on the top surface of thesubmar ais 500 kPa.Calculate depth of the top surface of the submarine below the surface of the sea.

Answer»

ANSWER:

I don't KNOW this QUESTION is very BIG

Discussion

43.	A car starts from rest and attains a velocity of 20m/s in 5s. Calculate the distance during thistime
Answer» Answer: 100 m MULTIPLY both the TIME and VELOCITY as FORMULA for distance=time. SPEED

43.

A car starts from rest and attains a velocity of 20m/s in 5s. Calculate the distance during thistime

Answer»

Answer:

100 m MULTIPLY both the TIME and VELOCITY as FORMULA for distance=time. SPEED

Discussion

44.	Good Question?[Question given in attachment](i) Calculate the equivalent resistance(ii) Find:(a) Voltmeter reading(b) Ammeter reading(iii) Voltage drop by 'r'(iv) P.d. across the battery_• Quality Answers• No Plagiarized Answers
Answer» $\Large{\underbrace{\underline{\sf Understanding\:the\: <klux>QUESTION</klux>}}}$ Here in this question, concept of wheat stone bridge as well as internal resistance is used. We are given a circuit and we are asked to find- total resistance, voltmeter and Ammeter READING, voltage DROP by r and potential difference across battery. This could be a very complicated question if you don't know method to SOLVE it. Firstly we will solve the wheatstone bridge to find total resistance and continue to solve the problem by step by step. _______________________________ Solution :- The given wheatstone bridge is balanced, so the resistance between wire BC will not be considered. Now we can see that all the resistors are of 4Ω, so equivalent resistance for wheat stone bridge is 4Ω. Now resistors of 4Ω, 1Ω, 3Ω, and 6Ω are in series connection with wheatstone bridge. So total resistance of series connection can be expressed as:: ⇒ Rₙ=R₁+R₂+R₃... By substituting given values:: ⇒ Rₙ=4Ω+4Ω+1Ω+6Ω+3Ω ⇒ Rₙ=18Ω *So the total resistance of the circuit is 18Ω.* _______________________________ ~Finding reading of Ammeter ⇒ ∈=IRₙ ⇒ 12v=I(18Ω) ⇒ 12v/18Ω=I ⇒ 0.6 Ampere=I This is the current in the circuit. We know that current remains same in series connection, so reading of Ammeter will be 0.6 Ampere. _______________________________ ~Finding voltmeter reading ⇒ V=IRₓ Since voltmeter is across 4Ω resistor, value of Rₓ will be 4Ω. ⇒ V=(0.6 A)(4Ω) ⇒ V=2.4v This is the reading of voltmeter _______________________________ ~Finding p.d. We have formula for e.m.f. ⇒ ∈=I(R+r) ⇒ ∈=IR+Ir Replace IR by Vₙ (p.d.) ⇒ 12v=Vₙ+(0.6 A)(6Ω) ⇒ 12v=Vₙ+3.6v ⇒ 12v-3.6v=Vₙ ⇒ 8.4v=Vₙ This is the potential difference across terminal of battery. _______________________________ ~Finding voltage dropped by r Since the total emf of battery was 12v but it remained only 8.4 connected to circuit. It means that rest of the voltage is dropped by r. This situation can be expressed as:: ⇒ Potential drop by r=∈-Vₙ ⇒ Potential drop by r=12v-8.4v ⇒ Potential drop by r=3.6v *This is the potential dropped by r.* _______________________________ ★ Terms used by me in solution :- r=internal resistance Rₙ=R=Equivalent resistance V=voltmeter reading Vₙ=Voltage in circuit or across TERMINALS of battery I=Reading of Ammeter ∈=emf _______________________________

44.

Good Question?[Question given in attachment](i) Calculate the equivalent resistance(ii) Find:(a) Voltmeter reading(b) Ammeter reading(iii) Voltage drop by 'r'(iv) P.d. across the battery_• Quality Answers• No Plagiarized Answers

Answer»

$\Large{\underbrace{\underline{\sf Understanding\:the\: <klux>QUESTION</klux>}}}$

Here in this question, concept of wheat stone bridge as well as internal resistance is used. We are given a circuit and we are asked to find- total resistance, voltmeter and Ammeter READING, voltage DROP by r and potential difference across battery. This could be a very complicated question if you don't know method to SOLVE it. Firstly we will solve the wheatstone bridge to find total resistance and continue to solve the problem by step by step.

_______________________________

Solution :-

The given wheatstone bridge is balanced, so the resistance between wire BC will not be considered.

Now we can see that all the resistors are of 4Ω, so equivalent resistance for wheat stone bridge is 4Ω.

Now resistors of 4Ω, 1Ω, 3Ω, and 6Ω are in series connection with wheatstone bridge. So total resistance of series connection can be expressed as::

⇒ Rₙ=R₁+R₂+R₃...

By substituting given values::

⇒ Rₙ=4Ω+4Ω+1Ω+6Ω+3Ω

⇒ Rₙ=18Ω

So the total resistance of the circuit is 18Ω.

_______________________________

~Finding reading of Ammeter

⇒ ∈=IRₙ

⇒ 12v=I(18Ω)

⇒ 12v/18Ω=I

⇒ 0.6 Ampere=I

This is the current in the circuit.

We know that current remains same in series connection, so reading of Ammeter will be 0.6 Ampere.

_______________________________

~Finding voltmeter reading

⇒ V=IRₓ

Since voltmeter is across 4Ω resistor, value of Rₓ will be 4Ω.

⇒ V=(0.6 A)(4Ω)

⇒ V=2.4v

This is the reading of voltmeter

_______________________________

~Finding p.d.

We have formula for e.m.f.

⇒ ∈=I(R+r)

⇒ ∈=IR+Ir

Replace IR by Vₙ (p.d.)

⇒ 12v=Vₙ+(0.6 A)(6Ω)

⇒ 12v=Vₙ+3.6v

⇒ 12v-3.6v=Vₙ

⇒ 8.4v=Vₙ

This is the potential difference across terminal of battery.

_______________________________

~Finding voltage dropped by r

Since the total emf of battery was 12v but it remained only 8.4 connected to circuit. It means that rest of the voltage is dropped by r.

This situation can be expressed as::

⇒ Potential drop by r=∈-Vₙ

⇒ Potential drop by r=12v-8.4v

⇒ Potential drop by r=3.6v

This is the potential dropped by r.

_______________________________

★ Terms used by me in solution :-

r=internal resistance

Rₙ=R=Equivalent resistance

V=voltmeter reading

Vₙ=Voltage in circuit or across TERMINALS of battery

I=Reading of Ammeter

∈=emf

_______________________________

Discussion

45.	Gravitational force between two-point objects having masses m1 and m2 separated bydistance ‘r’ from their centres is (A)Directly proportional to product of their masses and inversely proportional to distance between their centers (B) Directly proportional to product of their masses and is independent of distance between the masses. (C) Depends on distance between the masses and is independent of magnitude of masses (D)Directly proportional to product of their masses and inversely proportional to squareof the distance between the bodies
Answer» The universal LAW of gravitation stars that every body in the universe attract other bodies with a FORCE directly proportional to the product of their masses and inversely proportional to the square of DISTANCE between them. Equation for Universal law of gravitation : $F_{grav} \: ∝ \: G \frac{ m_{1} m_{2} }{ {d}^{2} }$ Hence, according to the above options option D is correct. Hope this HELPS you. Thank you for your question. Mark me as brainleist.

45.

Gravitational force between two-point objects having masses m1 and m2 separated bydistance ‘r’ from their centres is (A)Directly proportional to product of their masses and inversely proportional to distance between their centers (B) Directly proportional to product of their masses and is independent of distance between the masses. (C) Depends on distance between the masses and is independent of magnitude of masses (D)Directly proportional to product of their masses and inversely proportional to squareof the distance between the bodies

Answer»

The universal LAW of gravitation stars that every body in the universe attract other bodies with a FORCE directly proportional to the product of their masses and inversely proportional to the square of DISTANCE between them.

Equation for Universal law of gravitation :

$F_{grav} \: ∝ \: G \frac{ m_{1} m_{2} }{ {d}^{2} }$

Hence, according to the above options option D is correct.

Hope this HELPS you.

Thank you for your question.

Mark me as brainleist.

Discussion

46.	Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object.
Answer» Answer: 1 For a BLOCK in EQUILIBRIUM, Equating forces ALONG Y−axis, Normal reaction, N=mg Equating forces along X−axis, ma=F−f where f=μmg ma=F−μmg a= m F−μmg a= 4 12−0.2×4×10 a= 4 12−8 a= 4 4 a=1 MS −2

46.

Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object.

Answer»

Answer:

1

For a BLOCK in EQUILIBRIUM,

Equating forces ALONG Y−axis,

Normal reaction, N=mg

Equating forces along X−axis,

ma=F−f

where f=μmg

ma=F−μmg

a=

m

F−μmg

a=

4

12−0.2×4×10

a=

4

12−8

a=

4

a=1 MS

−2

Discussion

47.	Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object.Answer please
Answer» 100% CORRECT answer Hope it's HELPFUL ✌️✌️ $\huge\color{red}\boxed{\colorbox{black}{please\:mark\:me\: brilliance}}$ $\huge\underline\purple{\underline {Follow\:Me}}$

47.

Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object.Answer please

Answer»

100% CORRECT answer

Hope it's HELPFUL ✌️✌️

$\huge\color{red}\boxed{\colorbox{black}{please\:mark\:me\: brilliance}}$

$\huge\underline\purple{\underline {Follow\:Me}}$

Discussion

48.	(3) (i) निम्नलिखित शब्दों के विलोम शब्द लिखिए :(1) प्यार(2) घाटा xii) निम्नलिखित शब्दों के वचन पहचानकर लिखिए :(1) गहने (2) घर।(4) 'महिलाओं को गहनों का शौक' विषय पर अपने विचार 25 से 30 श(इ) निम्नलिखित अपठित गद्यांश पढ़कर सूचनाओं के अनुसार कृषिपलाश के फूल का ऊपरवाला भाग नारंगीपन लिए हुए लाल रंगकालापन लिए हुए गहरे कत्थई रंग का होता है। इसके प्रत्येक फूलभाग तोते की चोंच के समान होता है। इसीलिए इसे संस्कृत में 'किंशुक
Answer» ANSWER: (१) प्यार × नफरत (२) घाटा × फायदा (१) गहने = अनेकवचन (२) घर = एकवचन

48.

(3) (i) निम्नलिखित शब्दों के विलोम शब्द लिखिए :(1) प्यार(2) घाटा xii) निम्नलिखित शब्दों के वचन पहचानकर लिखिए :(1) गहने (2) घर।(4) 'महिलाओं को गहनों का शौक' विषय पर अपने विचार 25 से 30 श(इ) निम्नलिखित अपठित गद्यांश पढ़कर सूचनाओं के अनुसार कृषिपलाश के फूल का ऊपरवाला भाग नारंगीपन लिए हुए लाल रंगकालापन लिए हुए गहरे कत्थई रंग का होता है। इसके प्रत्येक फूलभाग तोते की चोंच के समान होता है। इसीलिए इसे संस्कृत में 'किंशुक

Answer»

ANSWER:

(१) प्यार × नफरत

(२) घाटा × फायदा

(१) गहने = अनेकवचन

(२) घर = एकवचन

Discussion

49.	Question No. 14Considering the Bohrs atomicmodel, the estimated speed of anelectron in the first orbit of hydrogenatom is
Answer» Answer: REPORT MY ALL QUESTIONS I GIVE 50 POINTS AND 10 THANKS ❣❣❣❣❣❣❣❣

49.

Question No. 14Considering the Bohrs atomicmodel, the estimated speed of anelectron in the first orbit of hydrogenatom is

Answer»

Answer:

REPORT MY ALL QUESTIONS I GIVE 50 POINTS AND 10 THANKS

❣❣❣❣❣❣❣❣

Discussion

50.	Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object
Answer» ANSWER: energy which a BODY possesses by VIRTUE of being in motion.

50.

Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object

Answer»

ANSWER:

energy which a BODY possesses by VIRTUE of being in motion.

Discussion

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_______________________________

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_______________________________

~Finding voltmeter reading

_______________________________

~Finding p.d.

_______________________________

~Finding voltage dropped by r

_______________________________

★ Terms used by me in solution :-

_______________________________

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