67486 + Interview Questions in Secondary School in Physics

1.	The frequency n and of are turning for depend upon length l of a prong the density p and the young's modulus y of the material. from dimensional coordination find a possible formula for frequency of turning fork.
Answer» FREQUENCY (n) of a tuning fork depends upon the length (L) of its prongs, the DENSITY (d) and Young's modulus (Y) of its MATERIAL

Discussion

2.	Name four derived units and write them as their base units?
Answer» ong>Answer: hope it helps you force newton m·kg·s-2 pressure, stress pascal m-1·kg·s-2 energy, WORK, QUANTITY of heat joule m2·kg·s-2 power, radiant FLUX watt m2·kg·s-3

2.

Name four derived units and write them as their base units?

Answer»

ong>Answer:

hope it helps you

force newton m·kg·s-2
pressure, stress pascal m-1·kg·s-2
energy, WORK, QUANTITY of heat joule m2·kg·s-2
power, radiant FLUX watt m2·kg·s-3

Discussion

3.	Difference between good conductor and bad conducter
Answer» ONG>Answer: A material that allows electricity to pass through it EASILY is CALLED a conductor. Metals, especially silver, are good electrical conductors. Materials LIKE glass and PLASTIC are poor electrical conductors, and are called insulators. PLEASE, MARK ME AS BRAINLIEST!

3.

Difference between good conductor and bad conducter

Answer» ONG>Answer:

A material that allows electricity to pass through it EASILY is CALLED a conductor. Metals, especially silver, are good electrical conductors. Materials LIKE glass and PLASTIC are poor electrical conductors, and are called insulators.

PLEASE, MARK ME AS BRAINLIEST!

Discussion

4.	4. Manasvi moves with speed of 6 km/h for 2 h and with speed of 4 km/h for next 3 h. find the average speed of Manasvi and total displacement moved.Art. 2C11
Answer» ONG>Answer: please maaf me as a brainliest Explanation: speed is equal to distance into TIME therefore 6KM =distance ×2h distance =6/2=3m now 4km=distance ×3h distance =4/3=1.3 AVERAGE speed =6-4 =2ms-² displacement=2.7m

4.

4. Manasvi moves with speed of 6 km/h for 2 h and with speed of 4 km/h for next 3 h. find the average speed of Manasvi and total displacement moved.Art. 2C11

Answer» ONG>Answer:

please maaf me as a brainliest

Explanation:

speed is equal to distance into TIME therefore

6KM =distance ×2h

distance =6/2=3m

now

4km=distance ×3h

distance =4/3=1.3

AVERAGE speed =6-4 =2ms-²

displacement=2.7m

Discussion

5.	Calculate the velocity of a car travelling with a uniform velocity covering 100 m distance in 4 seconds.
Answer» ONG>Answer: 144m/s is the UNIFORM VELOCITY of the car. Hope it HELPS;)

5.

Calculate the velocity of a car travelling with a uniform velocity covering 100 m distance in 4 seconds.

Answer» ONG>Answer:

144m/s is the UNIFORM VELOCITY of the car.

Hope it HELPS;)

Discussion

6.	What is a full foom of www
Answer» ong>ANSWER: Wirld WIDE Web Hope it HELPS;)

6.

What is a full foom of www

Answer»

ong>ANSWER:

Wirld WIDE Web

Hope it HELPS;)

Discussion

7.	TheFind RateofequationN₂ + 3H₂ > 2NH₂
Answer» ONG>ANSWER: yes you are right don't ask answer Explanation: yes you are right don't ask answer

7.

TheFind RateofequationN₂ + 3H₂ > 2NH₂

Answer» ONG>ANSWER:

yes you are right don't ask answer

Explanation:

yes you are right don't ask answer

Discussion

8.	Scientist after whom the si unit of precisam
Answer» ong>ANSWER: The SI BASE UNIT of electric current, named after the French PHYSICIST André-Marie Ampère (1775-1836)

8.

Scientist after whom the si unit of precisam

Answer»

ong>ANSWER:

The SI BASE UNIT of electric current, named after the French PHYSICIST André-Marie Ampère (1775-1836)

Discussion

9.	1Q) The far point of a myopic person is 40 cm. Find the focal length and power of the lens required to correct this defect.
Answer» ong>Answer: EXPLANATION: The nature and power of lens required to CORRECT the DEFECT is -2.5D . To know more: The FAR point of a myopic eye is 60 cm .

9.

1Q) The far point of a myopic person is 40 cm. Find the focal length and power of the lens required to correct this defect.

Answer»

ong>Answer:

EXPLANATION:

The nature and power of lens required to CORRECT the DEFECT is -2.5D . To know more: The FAR point of a myopic eye is 60 cm .

Discussion

10.	Best answer get brainliest
Answer» ONG>ANSWER: EXPLANATION: OPTION b

10.

Best answer get brainliest

Answer» ONG>ANSWER:

EXPLANATION:

OPTION b

Discussion

11.	Can we provide infinite amount of charge on any conductor . if not then why
Answer» ong>Answer: Technically, STORING or providing infinite charge to a conductor is not possible. This is because this is similar to filling a glass jar with sand. There are millions of small sand particles in the jar. If one asked you to count the particles it would be a real tough ask. Even if you manage to count them, there is a HIGH probability of getting an erroneous value. To minimize such difficulties the concept of Infinity has been introduced. Now coming back to the question, every conductor, irrespective of its shape and size has a charge storing capacity. Since every material is made up of it's constituent atoms, there has to be a limit to which a conductor can accommodate the atoms. Now atoms are composed of fixed number of electrons, hence once again there is a limit to the number of Electrons present. Charge is nothing but electrons themselves. Any amount of charge PROVIDED beyond the carrying capacity of the conductor will result in Charge overflow which is similar to the sand overflowing from the jar. This will never contribute to the total charge contained in a conductor. Hope that helps . What does Jibble actually do? Jibble is a free time clock app that enables businesses to track when their staff are at work - for payroll, attendance, compliance. In construction, manufacturing, retail, for example, you need to know when your hourly staff are at work for payroll. For field services you need to know whe What happens to an electric current if more charges pass through a conductor at a given amount of time? What happens to the charge when a negatively charged conductor is earthed? Will the same thing happen if the conductor is positively charged? What will happen when a charged conductor is touched with an uncharged conductor such that the uncharged conductor is of the same material but half the size? What happens when two positive charges are connected with a conductor? Does a grounded conductor have zero charge? What happens when we have a conductor between two charges? What will happen if the area of a conductor is doubled and the length of a conductor is kept the same? Assume a conductor has a cavity, within which lies a charge +q. What is the field due to this charge outside the conductor itself? Does it exist? Why is the POTENTIAL on an infinite conductor near a point charge EQUAL to 0 (electromagnetism and physics)? What is the type of charge carried in a conductor? A charge conductor has 4,000 electrons in excess. What is the total charge present in the conductor? Is there any conductor which can be almost unlimited charge? What happens if the conductors of a bundled conductor touch? In electric potential, the charge is brought from infinity. How can there be an infinity in a conductor? Why can conductors be charged (positively or negatively) even if the net charge within the conductor is zero due to conductor properties?

11.

Can we provide infinite amount of charge on any conductor . if not then why

Answer»

ong>Answer:

Technically, STORING or providing infinite charge to a conductor is not possible. This is because this is similar to filling a glass jar with sand. There are millions of small sand particles in the jar. If one asked you to count the particles it would be a real tough ask. Even if you manage to count them, there is a HIGH probability of getting an erroneous value. To minimize such difficulties the concept of Infinity has been introduced.

Now coming back to the question, every conductor, irrespective of its shape and size has a charge storing capacity. Since every material is made up of it's constituent atoms, there has to be a limit to which a conductor can accommodate the atoms. Now atoms are composed of fixed number of electrons, hence once again there is a limit to the number of Electrons present.

Charge is nothing but electrons themselves. Any amount of charge PROVIDED beyond the carrying capacity of the conductor will result in Charge overflow which is similar to the sand overflowing from the jar. This will never contribute to the total charge contained in a conductor.

Hope that helps .

What does Jibble actually do?

Jibble is a free time clock app that enables businesses to track when their staff are at work - for payroll, attendance, compliance. In construction, manufacturing, retail, for example, you need to know when your hourly staff are at work for payroll. For field services you need to know whe

What happens to an electric current if more charges pass through a conductor at a given amount of time?

What happens to the charge when a negatively charged conductor is earthed? Will the same thing happen if the conductor is positively charged?

What will happen when a charged conductor is touched with an uncharged conductor such that the uncharged conductor is of the same material but half the size?

What happens when two positive charges are connected with a conductor?

Does a grounded conductor have zero charge?

What happens when we have a conductor between two charges?

What will happen if the area of a conductor is doubled and the length of a conductor is kept the same?

Assume a conductor has a cavity, within which lies a charge +q. What is the field due to this charge outside the conductor itself? Does it exist?

Why is the POTENTIAL on an infinite conductor near a point charge EQUAL to 0 (electromagnetism and physics)?

What is the type of charge carried in a conductor?

A charge conductor has 4,000 electrons in excess. What is the total charge present in the conductor?

Is there any conductor which can be almost unlimited charge?

What happens if the conductors of a bundled conductor touch?

In electric potential, the charge is brought from infinity. How can there be an infinity in a conductor?

Why can conductors be charged (positively or negatively) even if the net charge within the conductor is zero due to conductor properties?

Discussion

12.	Lale 01 UN DIVIULUNIf the acceleration of a moving object is constant then the motion is saidto be[(a) Motion with Constant Speedted experimentsduct an expermiment to find acceleration and velocity of an object movingined plane and write a report.ed projectsalate the avarage speeds of students of your class we who have participaneters and 200 meters running race. Write a report.(b) Motion with Uniform Acceleration(c) Motion with Uniform Velocity (d) Motion with Non Uniform acceleratio
Answer» ONG>ANSWER: If the acceleration of a MOVING OBJECT is constant then the motion is said (b) Motion with Uniform Acceleration.

12.

Lale 01 UN DIVIULUNIf the acceleration of a moving object is constant then the motion is saidto be[(a) Motion with Constant Speedted experimentsduct an expermiment to find acceleration and velocity of an object movingined plane and write a report.ed projectsalate the avarage speeds of students of your class we who have participaneters and 200 meters running race. Write a report.(b) Motion with Uniform Acceleration(c) Motion with Uniform Velocity (d) Motion with Non Uniform acceleratio

Answer» ONG>ANSWER:

If the acceleration of a MOVING OBJECT is constant then the motion is said (b) Motion with Uniform Acceleration.

Discussion

13.	The ratio of energy in fourth and third excited state of hydrogen atom is
Answer» >LOTA PICE KANKI in the world OK neeeee *iwhdjugggwwwwbjhvuejjiok* Explanation: lgfuf

13.

The ratio of energy in fourth and third excited state of hydrogen atom is

Answer»

>LOTA PICE KANKI in the world OK neeeee iwhdjugggwwwwbjhvuejjiok

Explanation:

lgfuf

Discussion

14.	Object placed at the distance of 20cm from a convex mirror of focal length 30cm then find the position and nature of the image
Answer» ong>ANSWER: Position of the IMAGE is BEHIND the mirror since v COMES out to be positive and the image is small in nature. Explanation:

14.

Object placed at the distance of 20cm from a convex mirror of focal length 30cm then find the position and nature of the image

Answer»

ong>ANSWER:

Position of the IMAGE is BEHIND the mirror since v COMES out to be positive and the image is small in nature.

Explanation:

Discussion

15.	Can a measurement be both precise and accurate?
Answer» ONG>Answer: ya sure for EXAMPLE if correct MEASUREMENT is 2 and we get measurement as 1.99 and 2.01 then this are precise as well as accurate. hope this will HELP you out

Discussion

16.	The speed of the light in diamond is 1, 24, 000 km/s. Find the refractive index of diamond if the speed of light in air is 3, 00,000 km/s.
Answer» $\bigstar$ Given The speed of the light in a diamond is 1,24,000 km/s The speed of light in air is 3,00,000 km/s $\bigstar$ To Find The refractive INDEX of diamond $\bigstar$ Solution We KNOW that $\red{\sf \longrightarrow <klux>N</klux>=\dfrac{c}{v}}$ Here n = refractive index of medium c = speed of light in air v = velocity of light in medium According to the question Hence The medium is diamond And We are asked to find the the refractive index of diamond Therefore We must find "n" Given that The speed of the light in a diamond is 1,24,000 km/s The speed of light in air is 3,00,000 km/s Hence v = 1,24,000 km/s c = 3,00,000 km/s Substituting the values We GET $\green{\sf \longrightarrow n=\dfrac{3,00,000}{1,24,000}}$ On further simplification We get $\orange{\sf \longrightarrow n=\dfrac{300}{124}}$ Hence $\pink{\sf \longrightarrow n=2.4}$ Therefore The refractive index of diamond = 2.4

16.

The speed of the light in diamond is 1, 24, 000 km/s. Find the refractive index of diamond if the speed of light in air is 3, 00,000 km/s.

Answer» $\bigstar$ Given

The speed of the light in a diamond is 1,24,000 km/s

The speed of light in air is 3,00,000 km/s

$\bigstar$ To Find

The refractive INDEX of diamond

$\bigstar$ Solution

We KNOW that

$\red{\sf \longrightarrow <klux>N</klux>=\dfrac{c}{v}}$

Here

n = refractive index of medium
c = speed of light in air
v = velocity of light in medium

According to the question

Hence

The medium is diamond

And

We are asked to find the the refractive index of diamond

Therefore

We must find "n"

Given that

The speed of the light in a diamond is 1,24,000 km/s

The speed of light in air is 3,00,000 km/s

Hence

v = 1,24,000 km/s
c = 3,00,000 km/s

Substituting the values

We GET

$\green{\sf \longrightarrow n=\dfrac{3,00,000}{1,24,000}}$

On further simplification

We get

$\orange{\sf \longrightarrow n=\dfrac{300}{124}}$

Hence

$\pink{\sf \longrightarrow n=2.4}$

Therefore

The refractive index of diamond = 2.4

Discussion

17.	An effort of 200N is required to just move a certain body up an inclined plane of angle 15° , force acting parallel to the plane is 230N. Find the weight of the body and the coefficient of friction.
Answer» ONG>Answer: yyy6777t6y your VOICE in your answer to your questions about your voice or SAB theek or the internet of the WORD is the

Discussion

18.	Define the relation between momentum and kinetic energy
Answer» ONG>Answer: Kinetic ENERGY is the energy that any substance has when it accelerates, whereas momentum is an object's mass in MOTION. There is a kinetic energy and momentum RELATION due to their connection with mass and velocity. Explanation: plzz mark as a BRAINLIST answer.

18.

Define the relation between momentum and kinetic energy

Answer» ONG>Answer:

Kinetic ENERGY is the energy that any substance has when it accelerates, whereas momentum is an object's mass in MOTION. There is a kinetic energy and momentum RELATION due to their connection with mass and velocity.

Explanation:

plzz mark as a BRAINLIST answer.

Discussion

19.	ਪ੍ਰਸ਼ਨ 8. ਕਿਹੜੀ ਸੂਚਨਾ ਤੁਕ ਪੜ੍ਹਨ ਤੋਂ ਬਾਅਦ ਛੋਟਾ ਅਰਾਮ ਨਾਲ ਬੈਠ ਗਿਆ?2 points*®) Railway is a public property helpto maintain itOO21) A proper queue helps earlydisposal) The ticket office remains openday and night0H) Retiring rooms are booked at
Answer» ONG>ANSWER: oroewpktnwofnsjsodejfjejrjs

Discussion

20.	Distance - time graph for non uniform motion
Answer» uniform motion, the distance-time graph is a straight line parallel to the time AXIS as speed will be constant. The distance-time graph for non-uniform motion is not a straight line since speed is variable, it can be a CURVE or a ZIGZAG line.

20.

Distance - time graph for non uniform motion

Answer»

uniform motion, the distance-time graph is a straight line parallel to the time AXIS as speed will be constant. The distance-time graph for non-uniform motion is not a straight line since speed is variable, it can be a CURVE or a ZIGZAG line.

Discussion

21.	What is mobile explane me
Answer» ong>Answer: A mobile phone (also known as a hand phone, cell phone, or CELLULAR TELEPHONE) is a small portable radio telephone. The mobile phone can be used to communicate over long DISTANCES without wires. It works by COMMUNICATING with a nearby BASE station (also called a "cell site") which connects it to the main phone network.

21.

What is mobile explane me

Answer»

ong>Answer:

A mobile phone (also known as a hand phone, cell phone, or CELLULAR TELEPHONE) is a small portable radio telephone. The mobile phone can be used to communicate over long DISTANCES without wires. It works by COMMUNICATING with a nearby BASE station (also called a "cell site") which connects it to the main phone network.

Discussion

22.	Is ot correct to say that: fliuds exert downward pressure only
Answer» ONG>ANSWER: Yes It Is Correct Explanation: PLEASE MAKE Me Brainliest

22.

Is ot correct to say that: fliuds exert downward pressure only

Answer» ONG>ANSWER:

Yes It Is Correct

Explanation:

PLEASE MAKE Me Brainliest

Discussion

23.	What is electric motor?what is it's principle?
Answer» ong>Answer: The principle of an electric motor is BASED on the CURRENT carrying conductor which produces magnetic FIELD AROUND it. A current carrying conductor is placed PERPENDICULAR to the magnetic field so that it experiences a force. Explanation: plzz mark as a brainlist answer.

23.

What is electric motor?what is it's principle?

Answer»

ong>Answer:

The principle of an electric motor is BASED on the CURRENT carrying conductor which produces magnetic FIELD AROUND it. A current carrying conductor is placed PERPENDICULAR to the magnetic field so that it experiences a force.

Explanation:

plzz mark as a brainlist answer.

Discussion

24.	2. A rod of length 1m and mass 0.5 kg hinged at one end, is initially hanging vertical. The other end is nowraised slowly until it makes an angle 60° with the vertical. The required work is: (use g =9,8 m/(A) 1.522 J(B) 1.225 J(C) 2.125 J(D) 3.125 K
Answer» > hope this will be HELPFUL to you please FOLLOW me only if u LIKE

24.

2. A rod of length 1m and mass 0.5 kg hinged at one end, is initially hanging vertical. The other end is nowraised slowly until it makes an angle 60° with the vertical. The required work is: (use g =9,8 m/(A) 1.522 J(B) 1.225 J(C) 2.125 J(D) 3.125 K

Answer»

>

hope this will be HELPFUL to you

please FOLLOW me only if u LIKE

Discussion

25.	केव्हा ते लिहा. पायातील मुलाला घरच्यांच्या दुःखात सहभागी व्हावे, असे वाटू लागले.
Answer» ong>Answer: y OK Sharjah UAE tel no but INDIAN ECONOMY for IAS PRE exam ENVIRONMENTAL 6665

25.

केव्हा ते लिहा. पायातील मुलाला घरच्यांच्या दुःखात सहभागी व्हावे, असे वाटू लागले.

Answer»

ong>Answer:

y OK Sharjah UAE tel no but INDIAN ECONOMY for IAS PRE exam ENVIRONMENTAL 6665

Discussion

26.	Resistance of a conductor is thrice that of another conductor and the potential difference between the two ends of the two conductors are same. Find the ratio of strengths of current flowing through them
Answer» ong>Answer: SALA JANU janu kar RAHA HAI

26.

Resistance of a conductor is thrice that of another conductor and the potential difference between the two ends of the two conductors are same. Find the ratio of strengths of current flowing through them

Answer»

ong>Answer:

SALA JANU janu kar RAHA HAI

Discussion

27.	A solid weight 32gf in air and 28.8gf in water. Find the volume and RD of the solid. Find how much it will weigh in a liquid of density 0.9 g/cm³. please give the answer with process in a paper irrelevant answers will be reported please help friends
Answer» ong>Answer: Hii..! ${\huge{\tt{\boxed{\fcolorbox{red}{black}{Solution:-}}}}}$ _____________________________________ Given, Weight of SOLID in air, W, 32 gf Weight of solid when completely IMMERSED in WATER W2 = 28.8 gf (i) Volume of solid = Mass / density of solid. $= \frac{32}{10} = 3.2 {m}^{2} \\$ (ii) R.D. of solid = $\frac{w1}{w1 - w2} \times r.d \: \: of \: \: water. \\ \\ \\ r.d \: \: of \: \: solid \: = \: \frac{32}{32 - 28.8} \times 1 \\ \\ \\$ So, R.D of water = 10. Hence Solved! _____________________________________ Hope it helps you dear!

27.

A solid weight 32gf in air and 28.8gf in water. Find the volume and RD of the solid. Find how much it will weigh in a liquid of density 0.9 g/cm³. please give the answer with process in a paper irrelevant answers will be reported please help friends

Answer»

ong>Answer:

Hii..!

${\huge{\tt{\boxed{\fcolorbox{red}{black}{Solution:-}}}}}$

_____________________________________

Given,

Weight of SOLID in air, W, 32 gf

Weight of solid when completely IMMERSED in WATER W2 = 28.8 gf

(i) Volume of solid = Mass / density of solid.

$= \frac{32}{10} = 3.2 {m}^{2} \\$

(ii) R.D. of solid =

$\frac{w1}{w1 - w2} \times r.d \: \: of \: \: water. \\ \\ \\ r.d \: \: of \: \: solid \: = \: \frac{32}{32 - 28.8} \times 1 \\ \\ \\$

So, R.D of water = 10.

Hence Solved!

_____________________________________

Hope it helps you dear!

Discussion

28.	three strategies in which your school coulg involve learners in community work to develop a sense ofsocial responsiblity
Answer» ONG>ANSWER: team work and HONESTY discipline

Discussion

29.	bobby's mother wanted bobby to _reflect_____on his behaviour. choose word/phrase that gives the same meaning for the underlined word
Answer» s the ANSWER my DEAR fr8end do you like to be my FRIEND I am FORM SINGAPORE

29.

bobby's mother wanted bobby to _reflect_____on his behaviour. choose word/phrase that gives the same meaning for the underlined word

Answer»

s the ANSWER my DEAR fr8end do you like to be my FRIEND I am FORM SINGAPORE

Discussion

30.	Limitations for law of gravitation!!!!!!!!!!
Answer» tations on Newton's 2nd Law only if the mass is CONSTANT. Since the mass changes as the speed APPROACH the speed of LIGHT, F=ma is seen to be strictly a non-relativistic relationship that applies to the acceleration of constant mass objects.

30.

Limitations for law of gravitation!!!!!!!!!!

Answer»

tations on Newton's 2nd Law

only if the mass is CONSTANT. Since the mass changes as the speed APPROACH the speed of LIGHT, F=ma is seen to be strictly a non-relativistic relationship that applies to the acceleration of constant mass objects.

Discussion

31.	Q.7 A wire of length L and 3 identical cells of negligible internal resistance are connected in series. Due to thecurrent, the temperature of the wire is raised by AT ina time t. A number N of similar cells is now connectedin series with a wire of the same material and cross-section but of length 2L. The temperature of the wire israised by the same amount AT in the time. The value of N is (a) 4. (b)6. (c)8. (d)9.
Answer» ONG>ANSWER: jejskwkekwk4jekrjdjfj4jsjajdjfhrsurjdisj3neuwieirudjejddjejdieid7euduejdjdjeudjeidjejdjeje endnf Explanation: jsjejdjeejueueruejeu

31.

Q.7 A wire of length L and 3 identical cells of negligible internal resistance are connected in series. Due to thecurrent, the temperature of the wire is raised by AT ina time t. A number N of similar cells is now connectedin series with a wire of the same material and cross-section but of length 2L. The temperature of the wire israised by the same amount AT in the time. The value of N is (a) 4. (b)6. (c)8. (d)9.

Answer» ONG>ANSWER:

jejskwkekwk4jekrjdjfj4jsjajdjfhrsurjdisj3neuwieirudjejddjejdieid7euduejdjdjeudjeidjejdjeje

endnf

Explanation:

jsjejdjeejueueruejeu

Discussion

32.	Elephants have broad feet. true or false
Answer» ONG>Answer: It is TRUE because of their weight and size they need to distribute the weight better

Discussion

33.	Mention in brief the applications and natural occurences of rectilinear propagation of light.
Answer» ong>ANSWER: Applications of RECTILINEAR PROPAGATION of light. (i) Occurrence of eclipse (ii) Working of pinhole camera (III) Reflecting periscope Explanation: hope it helps U...

33.

Mention in brief the applications and natural occurences of rectilinear propagation of light.

Answer»

ong>ANSWER:

Applications of RECTILINEAR PROPAGATION of light. (i) Occurrence of eclipse (ii) Working of pinhole camera (III) Reflecting periscope

Explanation:

hope it helps U...

Discussion

34.	What is the vertical component of a displacement vector S = 26m makes angle 60 degreesang with X-axis?
Answer» n60 26×√3/2 13√2 hope it HELPS you

34.

What is the vertical component of a displacement vector S = 26m makes angle 60 degreesang with X-axis?

Answer»

n60

26×√3/2

13√2

hope it HELPS you

Discussion

35.	लम्बाई का मूल मात्रक है
Answer» ONG>Explanation: fundamental UNIT of LENGTH is metre hop it will HELP you ...

35.

लम्बाई का मूल मात्रक है

Answer» ONG>Explanation:

fundamental UNIT of LENGTH is metre

hop it will HELP you ...

Discussion

36.	HOTEGER 28.A cloth strip dipped in onion juice is used for testing a liquid %. Theliquid 'X' changes its odour. Which type of an indicator is onion juice?The liquid 'X' turns blue litmus red. List the observations the liquid Xwill show on reacting with the following:Zinc granules(b)Solid sodium carbonateWrite the chemical equations for the reactions involved.
Answer» ONG>Answer: ok . just write the ELEMENT NAME and multiply by 2 ..

36.

HOTEGER 28.A cloth strip dipped in onion juice is used for testing a liquid %. Theliquid 'X' changes its odour. Which type of an indicator is onion juice?The liquid 'X' turns blue litmus red. List the observations the liquid Xwill show on reacting with the following:Zinc granules(b)Solid sodium carbonateWrite the chemical equations for the reactions involved.

Answer» ONG>Answer:

ok .

just write the ELEMENT NAME and multiply by 2 ..

Discussion

37.	Limitations for newton's law of gravitation plz fast!!!!
Answer» ong>Answer: give be brilintest PLEASE MEN

37.

Limitations for newton's law of gravitation plz fast!!!!

Answer»

ong>Answer:

give be brilintest PLEASE MEN

Discussion

38.	All formulas of work, energy&power 11th
Answer» ong>EXPLANATION: I HOPE it is HELPFUL for you. please FOLLOW me

38.

All formulas of work, energy&power 11th

Answer»

ong>EXPLANATION:

I HOPE it is HELPFUL for you.

please FOLLOW me

Discussion

39.	Find out the ingredients of the give food items. a.Biryani. b
Answer» ong>ANSWER: The spices and condiments used in biryani may include ghee (clarified butter), NUTMEG, mace, pepper, CLOVES, cardamom, CINNAMON, bay leaves, coriander, mint leaves, ginger, onions, tomatoes, green chilies, and GARLIC. The premium varieties include saffron. hope this will be helpful to you please follow me only if u like

39.

Find out the ingredients of the give food items. a.Biryani. b

Answer»

ong>ANSWER:

The spices and condiments used in biryani may include ghee (clarified butter), NUTMEG, mace, pepper, CLOVES, cardamom, CINNAMON, bay leaves, coriander, mint leaves, ginger, onions, tomatoes, green chilies, and GARLIC. The premium varieties include saffron.

hope this will be helpful to you

please follow me only if u like

Discussion

40.	All formulas of laws of motion 11th
Answer» ong>Explanation: there are not such important formulas in NLM you have learn all. it is more conceptual. newtons LAWS of motion are important. you should also KNOW how to FIND acceleration by writing equation in case of pulley and on INCLINED plane types of forces acting on a body is also important hope it helps you

40.

All formulas of laws of motion 11th

Answer»

ong>Explanation:

there are not such important formulas in NLM you have learn all. it is more conceptual. newtons LAWS of motion are important. you should also KNOW how to FIND acceleration by writing equation in case of pulley and on INCLINED plane

types of forces acting on a body is also important

hope it helps you

Discussion

41.	Find the focal length of lens whose power is +2D
Answer» ong>EXPLANATION:P> GIVEN p= f 1 , ⟹f= p 1 p=2D ∴f= 2 1 m=50cm

41.

Find the focal length of lens whose power is +2D

Answer»

ong>EXPLANATION:P>

GIVEN p=

f

1

, ⟹f=

p

1

p=2D ∴f=

2

1

m=50cm

Discussion

42.	The period of revolution of the moon around the earth is 27.3 days. Remember that this is the period with respect to the fixed stars (the period of revolution with respect to the moving earth is about 29.5 days; it is this period that is used to fix the duration of a month in some calendars). The radius of moon’s orbit is 3.84 × 10^8 m (60 times the earth’s radius). Calculate the centripetal acceleration of the moon and show that it is very close to the value given by 9.8 ms–2 divided by 3600, to take account of the variation of the gravity as 1/ r2
Answer» ong>Answer: now what U NEED in this question of OTHERS bro

42.

The period of revolution of the moon around the earth is 27.3 days. Remember that this is the period with respect to the fixed stars (the period of revolution with respect to the moving earth is about 29.5 days; it is this period that is used to fix the duration of a month in some calendars). The radius of moon’s orbit is 3.84 × 10^8 m (60 times the earth’s radius). Calculate the centripetal acceleration of the moon and show that it is very close to the value given by 9.8 ms–2 divided by 3600, to take account of the variation of the gravity as 1/ r2

Answer»

ong>Answer:

now what U NEED in this question of OTHERS bro

Discussion

43.	एक चालक तार का प्रतिरोध 10 ओम है। यदि इस तार की लम्बाई को 3 गुना कर दे तो तार का प्रतिरोध क्या होगा
Answer» ong>Answer: 30 ohm Explanation: resistance is DIRECTLY proportional to the LENGTH of any WIRE

43.

एक चालक तार का प्रतिरोध 10 ओम है। यदि इस तार की लम्बाई को 3 गुना कर दे तो तार का प्रतिरोध क्या होगा

Answer»

ong>Answer:

30 ohm

Explanation:

resistance is DIRECTLY proportional to the LENGTH of any WIRE

Discussion

44.	All formulas of motion in plane 11th
Answer» ong>Answer: Equations of PLANE Motion v = final VELOCITY of the particle. u = initial velocity of the particle. s = displacement of the particle. a = ACCELERATION of the particle. t = the time interval in which the particle is in consideration. (#COPIED) Hope it will be useful to u! Stay safe nd Good night!

44.

All formulas of motion in plane 11th

Answer»

ong>Answer:

Equations of PLANE Motion

v = final VELOCITY of the particle.

u = initial velocity of the particle.

s = displacement of the particle.

a = ACCELERATION of the particle.

t = the time interval in which the particle is in consideration.

(#COPIED)

Hope it will be useful to u!

Stay safe nd Good night!

Discussion

45.	A ball is thrown horizontally with a speed of 21 metre per second from a height of 10m above the ground with what velocity will it strike the ground
Answer» ong>Answer: O sorry bro galti se LIKE kar DEY no mam

45.

A ball is thrown horizontally with a speed of 21 metre per second from a height of 10m above the ground with what velocity will it strike the ground

Answer»

ong>Answer:

O sorry bro galti se LIKE kar DEY no mam

Discussion

46.	What are the factors affecting the angle of deviation?
Answer» ong>Explanation: The angle of incidence refracting angle of prism wavelength of light RAY

46.

What are the factors affecting the angle of deviation?

Answer»

ong>Explanation:

The angle of incidence

refracting angle of prism

wavelength of light RAY

Discussion

47.	Distance - time graph for uniform motion
Answer» ong>Answer: DISTANCE - TIME graph When an object is MOVING with uniform velocity , the slope of graph is always a straight line. In other words slope of straight line of a distance- time graph SHOWS that objects is moving with uniform volecity . Explanation: HOPE IT WILL HELPFUL TO YOU. PLEASE MARK AS BRAINLIST... THANKS

47.

Distance - time graph for uniform motion

Answer»

ong>Answer:

DISTANCE - TIME graph

When an object is MOVING with uniform velocity , the slope of graph is always a straight line. In other words slope of straight line of a distance- time graph SHOWS that objects is moving with uniform volecity .

Explanation:

HOPE IT WILL HELPFUL TO YOU.

PLEASE MARK AS BRAINLIST...

THANKS

Discussion

48.	The displacement of a particle moving along x-axis is given by X = 18t + 5t. calculate:(i) the instantaneous velocity at t = 2s.(ii) average velocity between t = 2 s and t = 3s.(iii) instantaneous acceleration
Answer» ong>Given The displacement of a particle MOVING along x-axis is given by x = 18t + 5t² To Find i. Instantaneous VELOCITY at t = 2 s ii. Average velocity b/w t = 2 s and t = 3 s iii. Instantaneous acceleration Solution i. $\rm v=\dfrac{dx}{dt}\\\\\implies \rm v=\dfrac{d}{dt}(18t+5t^2)\\\\\implies \rm v=18+10t$ Instantaneous Velocity at t = 2 s is given by , $\implies \rm v=18+10(2)\\\\\implies \bf \pink{v=38\ m/s}\ \; \bigstar$ ii. Average velocity is given by displacement PER CHANGE in TIME $\implies \rm A_{v}=\dfrac{x_2-x_1}{t_2-t_1}$ $\implies \rm A_v=\dfrac{\{18(3)+5(3)^2\}-\{18(2)+5(2)^2\}}{3-2}\\\\$ $\implies \rm A_v=\dfrac{\{54+45\}-\{36+20\}}{1}\\\\\implies \rm A_v=99-56\\\\\implies \bf \green{A_v=43\ m/s}\ \; \bigstar$ iii. Instantaneous acceleration is given by , $\implies \rm a=\dfrac{dv}{dt}\\\\\implies \rm a=\dfrac{d}{dt}(18+10t)\\\\\implies \bf \blue{a=10\ m/s^2}\ \; \bigstar$

48.

The displacement of a particle moving along x-axis is given by X = 18t + 5t. calculate:(i) the instantaneous velocity at t = 2s.(ii) average velocity between t = 2 s and t = 3s.(iii) instantaneous acceleration

Answer»

ong>Given

The displacement of a particle MOVING along x-axis is given by

x = 18t + 5t²

To Find

i. Instantaneous VELOCITY at t = 2 s

ii. Average velocity b/w t = 2 s and t = 3 s

iii. Instantaneous acceleration

Solution

i.

$\rm v=\dfrac{dx}{dt}\\\\\implies \rm v=\dfrac{d}{dt}(18t+5t^2)\\\\\implies \rm v=18+10t$

Instantaneous Velocity at t = 2 s is given by ,

$\implies \rm v=18+10(2)\\\\\implies \bf \pink{v=38\ m/s}\ \; \bigstar$

ii.

Average velocity is given by displacement PER CHANGE in TIME

$\implies \rm A_{v}=\dfrac{x_2-x_1}{t_2-t_1}$

$\implies \rm A_v=\dfrac{\{18(3)+5(3)^2\}-\{18(2)+5(2)^2\}}{3-2}\\\\$

$\implies \rm A_v=\dfrac{\{54+45\}-\{36+20\}}{1}\\\\\implies \rm A_v=99-56\\\\\implies \bf \green{A_v=43\ m/s}\ \; \bigstar$

iii.

Instantaneous acceleration is given by ,

$\implies \rm a=\dfrac{dv}{dt}\\\\\implies \rm a=\dfrac{d}{dt}(18+10t)\\\\\implies \bf \blue{a=10\ m/s^2}\ \; \bigstar$

Discussion

49.	Whose formula is I=nave???
Answer» ONG>Answer: It is relation between DRIFT velocity and current FLOWING through unit volume of WIRE.

Discussion

50.	CalculatetotalamountChargeof Positive in360 gm ofwater
Answer» ong>Answer: 5.348×10^6 C Explanation: WEIGHT of WATER = 100g molecular weight of water = 18g/mol ∴ number of mole of water = given weight/molecule weight = 100/18 = 5.55 MOLES ∵ 1 mole of water CONTAINS = 10 mole of electrons [ H₂O , 2 electrons of H and 8 electrons of O ] ∴ 5.55 moles of water contain 10 × 5.55 = 55.5 mole of electrons. Now, number of electrons = number of mole of electrons × Avogadro's number = 55.5 × 6.023 × 10²³ = 334.27 × 10²³ = 3.3427 × 10²⁵ Hence, number of electrons = 3.34 × 10²⁵ ∵ charge on each electron = -1.6 × 10⁻¹⁹C ∴ total charge = number of electrons × charge on each electron = 3.34 × 10²⁵ × 1.6 × 10⁻¹⁹ C = 5.348 × 10⁶ C Hence, total charge = 5.348 × 10⁶C

50.

CalculatetotalamountChargeof Positive in360 gm ofwater

Answer»

ong>Answer:

5.348×10^6 C

Explanation:

WEIGHT of WATER = 100g

molecular weight of water = 18g/mol

∴ number of mole of water = given weight/molecule weight

= 100/18 = 5.55 MOLES

∵ 1 mole of water CONTAINS = 10 mole of electrons [ H₂O , 2 electrons of H and 8 electrons of O ]

∴ 5.55 moles of water contain 10 × 5.55 = 55.5 mole of electrons.

Now, number of electrons = number of mole of electrons × Avogadro's number

= 55.5 × 6.023 × 10²³

= 334.27 × 10²³

= 3.3427 × 10²⁵

Hence, number of electrons = 3.34 × 10²⁵

∵ charge on each electron = -1.6 × 10⁻¹⁹C

∴ total charge = number of electrons × charge on each electron

= 3.34 × 10²⁵ × 1.6 × 10⁻¹⁹ C

= 5.348 × 10⁶ C

Hence, total charge = 5.348 × 10⁶C

Discussion

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