67486 + Interview Questions in Secondary School in Physics

1.	What is universe?Hii.. How r u..
Answer» Answer: the universe is all of space and time and their CONTENTS, including PLANETS, STARTS, galaxies, and all other forms of Matter and ENERGY.

1.

What is universe?Hii.. How r u..

Answer»

Answer:

the universe is all of space and time and their CONTENTS, including PLANETS, STARTS, galaxies, and all other forms of Matter and ENERGY.

Discussion

2.	Pls solve this 2 questions it's very urgent
Answer» ANSWER: north and south pole have MORTH STRENGTH

2.

Pls solve this 2 questions it's very urgent

Answer»

ANSWER:

north and south pole have MORTH STRENGTH

Discussion

3.	What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series ?
Answer» Answer: There is no DIVISION of voltage among the appliances when connected in parallel. The potential difference across each appliance is equal to the supplied voltage. The total effective RESISTANCE of the circuit can be reduced by connecting ELECTRICAL appliances in parallel.

3.

What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series ?

Answer»

Answer:

There is no DIVISION of voltage among the appliances when connected in parallel. The potential difference across each appliance is equal to the supplied voltage. The total effective RESISTANCE of the circuit can be reduced by connecting ELECTRICAL appliances in parallel.

Discussion

4.	Charge passes a point in a circuit is 1.5 minutes and ammeter is 2A
Answer» ANSWER: And the FLOW of CHARGE is 0.75v

4.

Charge passes a point in a circuit is 1.5 minutes and ammeter is 2A

Answer»

ANSWER:

And the FLOW of CHARGE is 0.75v

Discussion

5.	According to Dulong-Petit law, total vibrational energy of monoatomic crystal isA) nkT B) 2nkTC) 3nkT D) 1/2 nkT
Answer» ANSWER is C) 3nkT D hope it HELP US

5.

According to Dulong-Petit law, total vibrational energy of monoatomic crystal isA) nkT B) 2nkTC) 3nkT D) 1/2 nkT

Answer»

ANSWER is

C) 3nkT D

hope it HELP US

Discussion

6.	_ are responsible for charging the bodypls answer in one word
Answer» ANSWER: FREE electron Explanation:

6.

_ are responsible for charging the bodypls answer in one word

Answer»

ANSWER:

FREE electron

Explanation:

Discussion

7.	Average energy of a Plank’s oscillator is ?
Answer» Answer: We want an expression for the average OSCILLATOR ENERGY Uυ , so some more algebra is required, NAMELY, ε/Uυ = EXP(ε /CT ) – 1, or Uυ = ε /[ exp(ε /CT ) – 1]. This was Planck's new expression for the average energy of a resonator in EQUILIBRIUM with black-body radiation—new as of 1900

7.

Average energy of a Plank’s oscillator is ?

Answer»

Answer:

We want an expression for the average OSCILLATOR ENERGY Uυ , so some more algebra is required, NAMELY, ε/Uυ = EXP(ε /CT ) – 1, or Uυ = ε /[ exp(ε /CT ) – 1]. This was Planck's new expression for the average energy of a resonator in EQUILIBRIUM with black-body radiation—new as of 1900

Discussion

8.	Z d 521 128 1890 pa ZqMt12
Answer» ANSWER: what is this don't know ask to UR MOM

8.

Z d 521 128 1890 pa ZqMt12

Answer»

ANSWER:

what is this

don't know

ask to UR MOM

Discussion

9.	Write with an example what is meant by functional group
Answer» ANSWER: In organic chemistry, a functional group is a SPECIFIC group of atoms or bonds within a COMPOUND that is responsible for the CHARACTERISTIC chemical reactions of that compound. The same functional group will behave in a SIMILAR fashion, by undergoing similar reactions, regardless of the compound of which it is a part Explanation: Examples of functional groups include the hydroxyl group, ketone group, amine group, and ether group. Hydroxyl Functional Group. ...Aldehyde Functional Group. ...Ketone Functional Group. ...Amine Functional Group. ...Amino Functional Group. ...Amide Functional Group. ...Ether Functional Group. ...Ester Functional Group.

9.

Write with an example what is meant by functional group

Answer»

ANSWER:

In organic chemistry, a functional group is a SPECIFIC group of atoms or bonds within a COMPOUND that is responsible for the CHARACTERISTIC chemical reactions of that compound. The same functional group will behave in a SIMILAR fashion, by undergoing similar reactions, regardless of the compound of which it is a part

Explanation:

Examples of functional groups include the hydroxyl group, ketone group, amine group, and ether group.

Hydroxyl Functional Group. ...Aldehyde Functional Group. ...Ketone Functional Group. ...Amine Functional Group. ...Amino Functional Group. ...Amide Functional Group. ...Ether Functional Group. ...Ester Functional Group.

Discussion

10.	आप लोग मेरा जवाब क्यों नहीं दे रहे हैं अगर आप लोग मुझे पसंद करते हैं तो अभी मुझे लाइक करें
Answer» ANSWER: you BEAUTIFUL ❤️❤️❤️❤️❤️ ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️ hiii

10.

आप लोग मेरा जवाब क्यों नहीं दे रहे हैं अगर आप लोग मुझे पसंद करते हैं तो अभी मुझे लाइक करें

Answer»

ANSWER:

you BEAUTIFUL ❤️❤️❤️❤️❤️

❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️

hiii

Discussion

11.	The power rating of anelectric lawn mower is 2000watts. If the lawn mower isused for 120 seconds, how manyjoules of work can it do?
Answer» ANSWER: WORK DONE = 240000Joules = 240 KiloJoules Explanation: $power \: = \frac{work \: done}{time}$ $work \: done \: = power \times time$ $work \: done = 2000 \times 120$ $work \: done = 240000 \: joules = 240 \: kilojoules$

11.

The power rating of anelectric lawn mower is 2000watts. If the lawn mower isused for 120 seconds, how manyjoules of work can it do?

Answer»

ANSWER:

WORK DONE = 240000Joules = 240 KiloJoules

Explanation:

$power \: = \frac{work \: done}{time}$

$work \: done \: = power \times time$

$work \: done = 2000 \times 120$

$work \: done = 240000 \: joules = 240 \: kilojoules$

Discussion

12.	If there is no change in magnetic flux, no induced electromagnetic force (EMF) is created.(True or False)
Answer» ANSWER: *TRUE* is *the* *correct* *answer* *please* *MARK* as *BRAINLIEST* *answer*

12.

If there is no change in magnetic flux, no induced electromagnetic force (EMF) is created.(True or False)

Answer»

ANSWER:

TRUE is the correct answer

please MARK as BRAINLIEST answer

Discussion

13.	(ii) Two masses 26 kg and 24 kg are attached to the ends of a string which passesover a frictionless pulley. 26 kg is lying over a smooth horizontal table. 24 kg mass is moving vertically downward. Find the tension in the string and the acceleration in the bodies.
Answer» TOPIC :- Law's of motion $\maltese\:\underline{\textsf{\textbf{AnsWer :}}}\:\maltese$ ⏭ First of all make an free BODY diagram "FBD" for the given question [ I've attached the FIGURE refer it ]. ✤ POINTS to keep in mind while drawing FBD's : ✏ Assume all the objects to be point particle. ✏ Weight 'mg' acting vertically downward in direction. ✏Keep all the forces tail to tail. $\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\linethickness{3mm}\put(1,1){\line(1,0){6.8}}\end{picture}$ ✪ CALCULATION ✪ $\longrightarrow\:\:\sf Acceleration= \dfrac{F_{net}}{M_{total}} \\$ $\longrightarrow\:\:\sf Acceleration= \dfrac{mg}{M_{total}} \\$ $\longrightarrow\:\:\sf Acceleration= \dfrac{mg}{m_1 + m_2} \\$ $\longrightarrow\:\:\sf Acceleration= \dfrac{(24)g}{24 + 26} \\$ $\longrightarrow\:\:\sf Acceleration= \dfrac{24 \times 10}{24 + 26} \\$ $\longrightarrow\:\:\sf Acceleration= \dfrac{240}{50} \\$ $\longrightarrow\:\: \underline{ \boxed{ \sf Acceleration= 4.8 \: {ms}^{ - 2} }} \\$ $\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\linethickness{3mm}\put(1,1){\line(1,0){6.8}}\end{picture}$ ✒Now, let's calculate the tension of the string. Refer figure No.2. ✒Here Acceleration (a) is acting vertically downward. So, dominating force will be mg. ✒By using Newton's second law of motion we have : $\longrightarrow\:\:\sf m_1g - T = m_1a \\$ $\longrightarrow\:\:\sf 24 \times 10 - T = 24 \times 4.8 \\$ $\longrightarrow\:\:\sf 240 - T = 115.2 \\$ $\longrightarrow\:\:\sf T = 240 - 115.2 \\$ $\longrightarrow\:\: \underline{ \boxed{\sf T = 124.8 \: N}}\\$ $\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\linethickness{3mm}\put(1,1){\line(1,0){6.8}}\end{picture}$ Here, I've given step by step explaination. You can calculate the tension in the string and Acceleration by given below formula directly : ☢ Tension in the string :- $\dag\:\bf T = \dfrac{m_1m_2}{m_1 + m_2}g$ ☢ Acceleration :- $\dag\:\bf a = \dfrac{m_1}{m_1 + m_2}g$ $\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\linethickness{3mm}\put(1,1){\line(1,0){6.8}}\end{picture}$

13.

(ii) Two masses 26 kg and 24 kg are attached to the ends of a string which passesover a frictionless pulley. 26 kg is lying over a smooth horizontal table. 24 kg mass is moving vertically downward. Find the tension in the string and the acceleration in the bodies.

Answer»

TOPIC :- Law's of motion

$\maltese\:\underline{\textsf{\textbf{AnsWer :}}}\:\maltese$

⏭ First of all make an free BODY diagram "FBD" for the given question [ I've attached the FIGURE refer it ].

✤ POINTS to keep in mind while drawing FBD's :

✏ Assume all the objects to be point particle.

✏ Weight 'mg' acting vertically downward in direction.

✏Keep all the forces tail to tail.

$\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\linethickness{3mm}\put(1,1){\line(1,0){6.8}}\end{picture}$

✪ CALCULATION ✪

$\longrightarrow\:\:\sf Acceleration= \dfrac{F_{net}}{M_{total}} \\$

$\longrightarrow\:\:\sf Acceleration= \dfrac{mg}{M_{total}} \\$

$\longrightarrow\:\:\sf Acceleration= \dfrac{mg}{m_1 + m_2} \\$

$\longrightarrow\:\:\sf Acceleration= \dfrac{(24)g}{24 + 26} \\$

$\longrightarrow\:\:\sf Acceleration= \dfrac{24 \times 10}{24 + 26} \\$

$\longrightarrow\:\:\sf Acceleration= \dfrac{240}{50} \\$

$\longrightarrow\:\: \underline{ \boxed{ \sf Acceleration= 4.8 \: {ms}^{ - 2} }} \\$

$\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\linethickness{3mm}\put(1,1){\line(1,0){6.8}}\end{picture}$

✒Now, let's calculate the tension of the string. Refer figure No.2.

✒Here Acceleration (a) is acting vertically downward. So, dominating force will be mg.

✒By using Newton's second law of motion we have :

$\longrightarrow\:\:\sf m_1g - T = m_1a \\$

$\longrightarrow\:\:\sf 24 \times 10 - T = 24 \times 4.8 \\$

$\longrightarrow\:\:\sf 240 - T = 115.2 \\$

$\longrightarrow\:\:\sf T = 240 - 115.2 \\$

$\longrightarrow\:\: \underline{ \boxed{\sf T = 124.8 \: N}}\\$

$\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\linethickness{3mm}\put(1,1){\line(1,0){6.8}}\end{picture}$

Here, I've given step by step explaination. You can calculate the tension in the string and Acceleration by given below formula directly :

☢ Tension in the string :-

$\dag\:\bf T = \dfrac{m_1m_2}{m_1 + m_2}g$

☢ Acceleration :-

$\dag\:\bf a = \dfrac{m_1}{m_1 + m_2}g$

$\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\linethickness{3mm}\put(1,1){\line(1,0){6.8}}\end{picture}$

Discussion

14.	in a rotating electric machine when the two magnetic fields are aligned with eachother developed torque will be
Answer» ANSWER: in rotating electric machine the two MAGNETIC fields are ALINED with each other DEVELOPED torque will be lamda

14.

in a rotating electric machine when the two magnetic fields are aligned with eachother developed torque will be

Answer»

ANSWER:

in rotating electric machine the two MAGNETIC fields are ALINED with each other DEVELOPED torque will be lamda

Discussion

15.	(Assertion) electric potential difference leads to electric current(Reasoning) electric current flowing in a circuit generates electrical potential difference in the circuitWhich of the sentence is correct and why1. A is correct2. B is correct3. Both A and B are correct4. Both A and B are wrong
Answer» Answer: 1. A is correct Explanation: The potential difference between two points of a circuit causes the electrons to be ATTRACTED, leading to the FLOW of electrons. This is called electric CURRENT.

15.

(Assertion) electric potential difference leads to electric current(Reasoning) electric current flowing in a circuit generates electrical potential difference in the circuitWhich of the sentence is correct and why1. A is correct2. B is correct3. Both A and B are correct4. Both A and B are wrong

Answer»

Answer:

1. A is correct

Explanation:

The potential difference between two points of a circuit causes the electrons to be ATTRACTED, leading to the FLOW of electrons. This is called electric CURRENT.

Discussion

16.	A ball freely from a height 1m on the ground and rebound to height of o.8m.find the coefficient of restitution?
Answer» ANSWER: The FORMULA is where, e=coefficient of restitution h1=height at which BALL is droped h2=height at which ball bounces Applying this formula we GET h2=0.6

16.

A ball freely from a height 1m on the ground and rebound to height of o.8m.find the coefficient of restitution?

Answer»

ANSWER:

The FORMULA is

where,

e=coefficient of restitution

h1=height at which BALL is droped

h2=height at which ball bounces

Applying this formula we GET h2=0.6

Discussion

17.	Is shaving mirror diffrent from plane mirror in your house?why?
Answer» EXPLANATION: Concave mirrors reflect LIGHT inward to one focal point. ... These mirrors are called "converging mirrors" because they tend to COLLECT light that falls on them, refocusing PARALLEL incoming rays toward a focus.

17.

Is shaving mirror diffrent from plane mirror in your house?why?

Answer»

EXPLANATION:

Concave mirrors reflect LIGHT inward to one focal point. ... These mirrors are called "converging mirrors" because they tend to COLLECT light that falls on them, refocusing PARALLEL incoming rays toward a focus.

Discussion

18.	In a given shell the order of screening effect is
Answer» Answer: The RELATIVE extent to which the various orbitals PENETRATE the electron clouds of other orbitals is s > p > d > f. Ionisation energy INCREASES will an increase in penetration power and thus the ORDER of screening effect is s > p > d > f .

18.

In a given shell the order of screening effect is

Answer»

Answer:

The RELATIVE extent to which the various orbitals PENETRATE the electron clouds of other orbitals is s > p > d > f. Ionisation energy INCREASES will an increase in penetration power and thus the ORDER of screening effect is s > p > d > f .

Discussion

19.	Why is slide wire bridge also called meter bridge
Answer» ANSWER: A meter BRIDGE also called a slide wire bridge is an instrument that works on the principle of a WHEATSTONE bridge. A meter bridge is used in finding the UNKNOWN resistance of a CONDUCTOR as that of in a Wheatstone bridge.

19.

Why is slide wire bridge also called meter bridge

Answer»

ANSWER:

A meter BRIDGE also called a slide wire bridge is an instrument that works on the principle of a WHEATSTONE bridge. A meter bridge is used in finding the UNKNOWN resistance of a CONDUCTOR as that of in a Wheatstone bridge.

Discussion

20.	Which among the following does not include the movement of gears?A. The machine which is prepared a sugar cane juiceB. PulleyC. Gear in vehiclesD. the machine which used in making rubber sheetplease say fast please
Answer» ANSWER: GEAR in VEHICLES or PULLEY

20.

Which among the following does not include the movement of gears?A. The machine which is prepared a sugar cane juiceB. PulleyC. Gear in vehiclesD. the machine which used in making rubber sheetplease say fast please

Answer»

ANSWER:

GEAR in VEHICLES or

PULLEY

Discussion

21.	Density ofsubstance is theto the densitI densityThedatioofwater(it
Answer» Answer: Density Density is commonly expressed in units of '’grams PER cubic centimetre” or “kilograms per cubic metre” in SI unit. Density of the substance may be 10, 100, 1000, 5000, 20000, or 10⁷ kilogram per meter³. Do you have any idea about 20000 kilogram per cubic metre ! . But ,you know how much LENGTH is ONE metre or one kilometre. So to compare and UNDERSTAND the density of the substance we compare the density of water. It is CALLED relative density of the substance. If the relative density of the substance is less than one it floats on water. If it is 5,then the substance is 5 times thicker than water, So it will sink in water.

21.

Density ofsubstance is theto the densitI densityThedatioofwater(it

Answer»

Answer:

Density Density is commonly expressed in units of '’grams PER cubic centimetre” or “kilograms per cubic metre” in SI unit. Density of the substance may be 10, 100, 1000, 5000, 20000, or 10⁷ kilogram per meter³. Do you have any idea about 20000 kilogram per cubic metre ! . But ,you know how much LENGTH is ONE metre or one kilometre. So to compare and UNDERSTAND the density of the substance we compare the density of water. It is CALLED relative density of the substance. If the relative density of the substance is less than one it floats on water. If it is 5,then the substance is 5 times thicker than water, So it will sink in water.

Discussion

22.	H. The energy stored in the electric cell
Answer» An ELECTRICAL cell is an "electrical POWER supply". It converts STORED chemical energy into electrical potential energy, allowing a current to flow from the POSITIVE terminal to the negative one via an external circuit.

Discussion

23.	Find (i) acceleration of the masses and (ii) tension in the two strings. Take coefficient of friction for the contact surfaces of bodies A and B as 0.3.
Answer» It’s pretty obvious that we should be GRATEFUL to the “essential workers” during this time of shelter in place. Food SUPPLIERS, health care workers, delivery people, and first RESPONDERS have taken on risks to themselves for the benefit of EVERYONE else. How can we possibly repay them? By showing a LITTLE

23.

Find (i) acceleration of the masses and (ii) tension in the two strings. Take coefficient of friction for the contact surfaces of bodies A and B as 0.3.

Answer»

It’s pretty obvious that we should be GRATEFUL to the “essential workers” during this time of shelter in

place. Food SUPPLIERS, health care workers, delivery people, and first RESPONDERS have taken on risks to

themselves for the benefit of EVERYONE else. How can we possibly repay them? By showing a LITTLE

Discussion

24.	3. A particle moves in a circle of radius 25cm at 2 rps. The acceleration of theparticle ism/s.
Answer» EXPLANATION: in شیج in شیج I NEED the FUKI ع ا س میں دی ہے جو لوگ

24.

3. A particle moves in a circle of radius 25cm at 2 rps. The acceleration of theparticle ism/s.

Answer»

EXPLANATION:

in شیج in شیج I NEED the FUKI ع ا س میں دی ہے جو لوگ

Discussion

25.	Describe the structure and functionof Muscular tissue and draw neatly
Answer» Answer: Each type of MUSCLE tissue in the human body has a unique STRUCTURE and a SPECIFIC role. Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that FORMS organs like the stomach and bladder changes shape to facilitate BODILY functions.

25.

Describe the structure and functionof Muscular tissue and draw neatly

Answer»

Answer:

Each type of MUSCLE tissue in the human body has a unique STRUCTURE and a SPECIFIC role. Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that FORMS organs like the stomach and bladder changes shape to facilitate BODILY functions.

Discussion

26.	10. If A = 2i – 2j and B = 2k, then A.B = ___
Answer» ANSWER: ik=jk Explanation: A=2i-2j B=2K (2i-2j)(2k) 2i2k-2j2k=0 2(IK)-2(jk)=0 2(ik)=2(jk) ik=jk

26.

10. If A = 2i – 2j and B = 2k, then A.B = ___

Answer»

ANSWER:

ik=jk

Explanation:

A=2i-2j B=2K

(2i-2j)(2k)

2i2k-2j2k=0

2(IK)-2(jk)=0

2(ik)=2(jk)

ik=jk

Discussion

27.	If the voltage applied across a device is4V and a charge of 12 C is flowing in 6sec through the device then the powerdissipated as heat isA. 18 wattB. 2 wattb. 8 wattD.. None of theseI
Answer» 8watt Explanation: i=q/t Q=12C T=6sec THEREFORE 12/6=2A power=voltagecurrent power= 4volt2A power=8watt

27.

If the voltage applied across a device is4V and a charge of 12 C is flowing in 6sec through the device then the powerdissipated as heat isA. 18 wattB. 2 wattb. 8 wattD.. None of theseI

Answer»

8watt

Explanation:

i=q/t

Q=12C

T=6sec

THEREFORE

12/6=2A

power=voltage*current

power= 4volt*2A

power=8watt

Discussion

28.	Current I in the above figure is0.5A1.5A3.5A2.5ANone
Answer» ANSWER: NONE of the above is CORRECT answer.

28.

Current I in the above figure is0.5A1.5A3.5A2.5ANone

Answer»

ANSWER:

NONE of the above is CORRECT answer.

Discussion

29.	Which part of electromagnetic spectrum has minimum wavelength?
Answer» Answer: *GAMMA* rays *has* *MINIMUM* *WAVELENGTH* in *ELECTROMAGNETIC* *spectrum*.

29.

Which part of electromagnetic spectrum has minimum wavelength?

Answer»

Answer:

GAMMA rays has MINIMUM WAVELENGTH in ELECTROMAGNETIC spectrum.

Discussion

30.	work done will be zero when the angle between force and displacement is 30 degree and 45 degree 60 degree 90 degree what is exact value
Answer» ANSWER: ABCDEFGHIJKLMNOPQRSTUVWXYZ

30.

work done will be zero when the angle between force and displacement is 30 degree and 45 degree 60 degree 90 degree what is exact value

Answer»

ANSWER:

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Discussion

31.	A metallic rod AB is sliding on conducting rails as shown in figure. Match the direction of induced current in resistor ‘R’ given in Row–II with different cases shown in Row–I.Case 1 - Magnetic field inside the screen. Motion towards your left.Case 2 - Magnetic field outside the screen. Motion towards your right.
Answer» Answer: Q1 A rod AB is lying as shown in the FIGURE. Point A has speed V A as shown. Find (i) Speed of point B (ii) Angular velocity of the rod The conducting rod ab, as shown in figure makes contact with metal rails ca and db. The apparatus is in a uniform magnetic field of 0.800T, perpendicular to the PLANE of the figure. In what direction does the current flow in the rod? COLUMN I shows the cylindrical REGION of radius r where a downward magnetic field B exists, where B is increasing at the rate of dB/dt. A rod PQ is PLACED in different situation as shown. Match the column I with the current statement in column II regarding the induced emf in rod. Explanation:

31.

A metallic rod AB is sliding on conducting rails as shown in figure. Match the direction of induced current in resistor ‘R’ given in Row–II with different cases shown in Row–I.Case 1 - Magnetic field inside the screen. Motion towards your left.Case 2 - Magnetic field outside the screen. Motion towards your right.

Answer»

Answer: Q1

A rod AB is lying as shown in the FIGURE. Point A has speed V

A

as shown. Find

(i) Speed of point B

(ii) Angular velocity of the rod

The conducting rod ab, as shown in figure makes contact with metal rails ca and db. The apparatus is in a uniform magnetic field of 0.800T, perpendicular to the PLANE of the figure. In what direction does the current flow in the rod?

COLUMN I shows the cylindrical REGION of radius r where a downward magnetic field

B

exists, where

B

is increasing at the rate of dB/dt. A rod PQ is PLACED in different situation as shown. Match the column I with the current statement in column II regarding the induced emf in rod.

Explanation:

Discussion

32.	State and explain law of parallelogram with diagram
Answer» Parallelogram LAW states that the sum of the squares of the length of the FOUR SIDES of a parallelogram is equal to the sum of the squares of the length of the TWO diagonals. In Euclidean GEOMETRY, it is necessary that the parallelogram should have equal opposite sides. 2(AB)2 + 2 (BC)2 = (AC)2 + (BD)2.

Discussion

33.	What is torque pls help me
Answer» $\huge{\underline{\underline{\mathrm{\red{AnswEr}}}}}$ In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment, moment of force, rotational force or turning effect, DEPENDING on the FIELD of study. The concept ORIGINATED with the studies by Archimedes of the USAGE of levers

33.

What is torque pls help me

Answer»

$\huge{\underline{\underline{\mathrm{\red{AnswEr}}}}}$

In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment, moment of force, rotational force or turning effect, DEPENDING on the FIELD of study. The concept ORIGINATED with the studies by Archimedes of the USAGE of levers

Discussion

34.	What is electric dipole moment?
Answer» the electrical DIPOLE moment is a MEASURE of the sepration of positive and negative electrical charges within the system that is a measure of the systems overall polarity. Explanation: The SI Units for electrical dipole moment are coulomb meter however, a commonly used unit in atomic PHYSICS and chemistry in the debye

34.

What is electric dipole moment?

Answer»

the electrical DIPOLE moment is a MEASURE of the sepration of positive and negative electrical charges within the system that is a measure of the systems overall polarity.

Explanation:

The SI Units for electrical dipole moment are coulomb meter however, a commonly used unit in atomic PHYSICS and chemistry in the debye

Discussion

35.	A bus covers a distance of 180 km in 4 hours .The speed of the bus is *40 km/h45 km/h30 km/h20 km/h
Answer» ANSWER: Distance = 180 km TIME = 4 hrs Speed = Distance ÷ Time = 180 ÷ 4 = 45 km/h

35.

A bus covers a distance of 180 km in 4 hours .The speed of the bus is *40 km/h45 km/h30 km/h20 km/h

Answer»

ANSWER:

Distance = 180 km

TIME = 4 hrs

Speed = Distance ÷ Time

= 180 ÷ 4

= 45 km/h

Discussion

36.	colour blindness is due to absence of ? A) cone shaped cell B) red shaped cell C) both cone shaped cell
Answer» Answer: Usually, GENES inherited from your parents cause faulty PHOTOPIGMENTS -- molecules that detect color in the cone-shaped cells, or “CONES,” in your retina. Explanation: Color blindness is a genetic condition caused by a DIFFERENCE in how one or more of the light-sensitive cells found in the retina of the EYE respond to certain colors. These cells, called cones, sense wavelengths of light, and enable the retina to distinguish between colors.

36.

colour blindness is due to absence of ? A) cone shaped cell B) red shaped cell C) both cone shaped cell

Answer»

Answer:

Usually, GENES inherited from your parents cause faulty PHOTOPIGMENTS -- molecules that detect color in the cone-shaped cells, or “CONES,” in your retina.

Explanation:

Color blindness is a genetic condition caused by a DIFFERENCE in how one or more of the light-sensitive cells found in the retina of the EYE respond to certain colors. These cells, called cones, sense wavelengths of light, and enable the retina to distinguish between colors.

Discussion

37.	गर्भाच्या विकासात अडथळा निर्माण होण्याची कारणे सोदाहरण स्पष्ट करा
Answer» EXPLANATION: A Pune-based conservationist and a group of environmentally-conscious citizens are trying to protect forest trees by creating a seed bank and recreating sacred groves. Raghunath DHOLE, 64, has collected over 150 seeds of TREE species from forests in various parts of MAHARASHTRA.

37.

गर्भाच्या विकासात अडथळा निर्माण होण्याची कारणे सोदाहरण स्पष्ट करा

Answer»

EXPLANATION:

A Pune-based conservationist and a group of environmentally-conscious citizens are trying to protect forest trees by creating a seed bank and recreating sacred groves. Raghunath DHOLE, 64, has collected over 150 seeds of TREE species from forests in various parts of MAHARASHTRA.

Discussion

38.	Define Force ?¿ isko kya hua -_-\|\|
Answer» In physics, a force is any interaction that, when unopposed, will change the motion of an OBJECT. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both MAGNITUDE and direction, MAKING it a vector quantity

Discussion

39.	Bright and dark fringes distribute symmetrically with same width in the Fraunhofer single-slit diffraction pattern.1-TRUE2-FALSE
Answer» Answer: 1-True. HOPE this HELPS

39.

Bright and dark fringes distribute symmetrically with same width in the Fraunhofer single-slit diffraction pattern.1-TRUE2-FALSE

Answer»

Answer:

1-True. HOPE this HELPS

Discussion

40.	How much work is done in moving a charge of 2caross 2 point having potential difference? 12v
Answer» it DII WORK done is to SEE it will APPROACH to see point potential DIFFERENCE approach

Discussion

41.	A train 175 m long takes 10 seconds to cross a man standingat the entrance of a tunnel 245 m long. How many secondsafter crossing the man will the train cross the tunnel?12 seconds14 seconds18 seconds24 seconds
Answer» Explanation: velocity of TRAIN = 175/10 = 17.5 m/s time = DISTANCE / velocity =( 175 + 245) / 17.5 = 420 / 17.5 = 4200/ 175 = 840/ 35 = 168/ 7 = 24 s

41.

A train 175 m long takes 10 seconds to cross a man standingat the entrance of a tunnel 245 m long. How many secondsafter crossing the man will the train cross the tunnel?12 seconds14 seconds18 seconds24 seconds

Answer»

Explanation:

velocity of TRAIN = 175/10 = 17.5 m/s

time = DISTANCE / velocity

=( 175 + 245) / 17.5 = 420 / 17.5 = 4200/ 175

= 840/ 35 = 168/ 7 = 24 s

Discussion

42.	What is amplitude and it's si unit
Answer» The SI UNIT of amplitude is the metre (m). Amplitude. The amplitude of a WAVE is the maximum disturbance or displacement of the medium from the equilibrium (rest) POSITION.

Discussion

43.	In a house, 3 bulbs of 100 watt each are lighted for 5 hours daily,two fans of 50 watt each are used for 10 hours daily and an electric heater of 1.00 kWh is used for half an hour daily. Calculate the total energy consumed in a month of 31 days.
Answer» Answer: Answer. = 46.5 UNITS. = 31 units. ... So TOTAL ENERGY used in 31 DAYS is 46.5 + 31 + 31 = 108.5 units.

43.

In a house, 3 bulbs of 100 watt each are lighted for 5 hours daily,two fans of 50 watt each are used for 10 hours daily and an electric heater of 1.00 kWh is used for half an hour daily. Calculate the total energy consumed in a month of 31 days.

Answer»

Answer:

Answer. = 46.5 UNITS. = 31 units. ... So TOTAL ENERGY used in 31 DAYS is 46.5 + 31 + 31 = 108.5 units.

Discussion

44.	Rest mass of a photon is zero is its momentum also zero?
Answer» Answer: It has been clearly established that the photons, if at all at REST, would have zero mass and hence, zero momentum. However, photons can never be arrested. This would mean that photons do possess definite momentum by virtue of their MOTION. They ALWAYS keep MOVING with a VELOCITY equal to that of light. hope it helps!!

44.

Rest mass of a photon is zero is its momentum also zero?

Answer»

Answer:

It has been clearly established that the photons, if at all at REST, would have zero mass and hence, zero momentum.

However, photons can never be arrested. This would mean that photons do possess definite momentum by virtue of their MOTION. They ALWAYS keep MOVING with a VELOCITY equal to that of light.

hope it helps!!

Discussion

45.	What is sublimation? name substances that sublimes
Answer» $\huge\green{\mid{\fbox{{คภรฬєг⤵}}\mid}}$ SUBLIMATION is the process in which solid TURNS directly into gas without converting into liquid. The substances undergoing sublimation are termed as sublimates. Examples : Ammonium CHLORIDE is white solid on HEATING it SUBLIMES. $\huge\fbox\red{hσpє}\huge\fbox\pink{ít}\fbox\green{hєlp}\huge\fbox\blue{yóû}$ $\huge\fbox{\red{\underline{mαrk \; mє \; вrαínlíєѕt \; plєαѕє ♥}}}$ $\large\bf{\underline\blue{❥thαnk \; чσu ♥♥}}$

45.

What is sublimation? name substances that sublimes

Answer»

$\huge\green{\mid{\fbox{{คภรฬєг⤵}}\mid}}$

SUBLIMATION is the process in which solid TURNS directly into gas without converting into liquid. The substances undergoing sublimation are termed as sublimates. Examples : Ammonium CHLORIDE is white solid on HEATING it SUBLIMES.

$\huge\fbox\red{hσpє}\huge\fbox\pink{ít}\fbox\green{hєlp}\huge\fbox\blue{yóû}$

$\huge\fbox{\red{\underline{mαrk \; mє \; вrαínlíєѕt \; plєαѕє ♥}}}$

$\large\bf{\underline\blue{❥thαnk \; чσu ♥♥}}$

Discussion

46.	Ananya is travelling to visit her grandmother. First, she travels at an average speed of 12 km/h for 10 km. Then she travels at 8.0 km/h for another 1.25 h. Calculate her average speed for the entire trip to her grandma's house.Please answer it fast as it is very urgent!!
Answer» ANSWER: kkkzkjajzjzjajzjj1j Explanation: nakkakak2k1lk2krk3k2k1u1ii2 kzkiakkzkzkkzkzo2ozleo kzizk3ku3j2i2ii2 2u2ii2kzi2l 3jk3k2k2

46.

Ananya is travelling to visit her grandmother. First, she travels at an average speed of 12 km/h for 10 km. Then she travels at 8.0 km/h for another 1.25 h. Calculate her average speed for the entire trip to her grandma's house.Please answer it fast as it is very urgent!!

Answer»

ANSWER:

kkkzkjajzjzjajzjj1j

Explanation:

nakkakak2k1lk2krk3k2k1u1ii2
kzkiakkzkzkkzkzo2ozleo
kzizk3ku3j2i2ii2
2u2ii2kzi2l
3jk3k2k2

Discussion

47.	The buoyancy of stone in water is 0.5N. what about the same stone in kerosene?if weight of stone in water is 1N and 1.5N in air.justify your answer.
Answer» ANSWER: FISHER Subsieve sizer is used to 1 point determine surface area. This surface area determination is based on change in O VOLUME differen

47.

The buoyancy of stone in water is 0.5N. what about the same stone in kerosene?if weight of stone in water is 1N and 1.5N in air.justify your answer.

Answer»

ANSWER:

FISHER Subsieve sizer is used to 1 point

determine surface area. This

surface area determination is

based on change in

O VOLUME differen

Discussion

48.	Express volume of an object in a proper unit with proper symbols
Answer» 52 is the REQUIRED answer. try other QUESTION:- brainly.in/question/35253122?utm_source=android&utm_medium=share&utm_campaign=question

48.

Express volume of an object in a proper unit with proper symbols

Answer»

52 is the REQUIRED answer.

try other QUESTION:-

brainly.in/question/35253122?utm_source=android&utm_medium=share&utm_campaign=question

Discussion

49.	What is electroplating? Mention the choice of cathode,anode and electrolyte for silver plating an iron spoon.
Answer» ANSWER:n silver plating, the object to be plated (e.g., a spoon) is made from the cathode of an electrolytic cell. The anode is a bar of silver metal, and the ELECTROLYTE (the LIQUID in between the ELECTRODES) is a solution of silver cyanide, AgCN, in water. ... This produces a shinier and more adherent silver plating. Explanation: I think this ans will be helpful for you

49.

What is electroplating? Mention the choice of cathode,anode and electrolyte for silver plating an iron spoon.

Answer»

ANSWER:n silver plating, the object to be plated (e.g., a spoon) is made from the cathode of an electrolytic cell. The anode is a bar of silver metal, and the ELECTROLYTE (the LIQUID in between the ELECTRODES) is a solution of silver cyanide, AgCN, in water. ... This produces a shinier and more adherent silver plating.

Explanation:

I think this ans will be helpful for you

Discussion

50.	State the relation between magnetic length and geometric length of a magnet. Also State the relation between magnetic field due to a bar magnet at a point along its axis and equator.
Answer» EXPLANATION: By calculating the axial field of a finite solenoid carrying current, a bar magnet can be demonstrated as a solenoid. CONSIDER a solenoid of radius a and length 2l with n NUMBER of turns PER unit length that has current I PASSING through the solenoid. Considering a small element of thickness dx of the solenoid at distance x from O such that OP = r.

50.

State the relation between magnetic length and geometric length of a magnet. Also State the relation between magnetic field due to a bar magnet at a point along its axis and equator.

Answer»

EXPLANATION:

By calculating the axial field of a finite solenoid carrying current, a bar magnet can be demonstrated as a solenoid. CONSIDER a solenoid of radius a and length 2l with n NUMBER of turns PER unit length that has current I PASSING through the solenoid. Considering a small element of thickness dx of the solenoid at distance x from O such that OP = r.

Discussion

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