13232 + Interview Questions in Physics

1.	A boy having a mass of 50 kg. What would be his weight on the Earth? (g = 10 m/s2)
Answer» A boy having a mass of 50 kg. What would be his weight on the Earth? (g = 10 m/s²)

Discussion

2.	The primary coil of a transformer contains 100 turns; the secondary has 200 turns. The primary coil is connected to a size AA battery that supplies a constant voltage of 1.5 volts. What voltage would be measured across the secondary coil?
Answer» The primary coil of a transformer contains 100 turns; the secondary has 200 turns. The primary coil is connected to a size AA battery that supplies a constant voltage of 1.5 volts. What voltage would be measured across the secondary coil?

Discussion

3.	What is meant by the renewable and non- renewable sources of energy ? State two differences between them, giving two examples of each.
Answer» What is meant by the renewable and non- renewable sources of energy ? State two differences between them, giving two examples of each.

Discussion

4.	Fill in the following blanks with suitable words : (a) An echo is simply a ___ sound . (b) Pitch of sound depends on ___ . (c) Loudness of sound depends on ___ . (d) Quality of sound depends on ___ . (e) Echoes are caused by the ___ of sound .
Answer» Fill in the following blanks with suitable words : (a) An echo is simply a ___ sound . (b) Pitch of sound depends on ___ . (c) Loudness of sound depends on ___ . (d) Quality of sound depends on ___ . (e) Echoes are caused by the ___ of sound .

4.

Fill in the following blanks with suitable words : (a) An echo is simply a _ sound . (b) Pitch of sound depends on _ . (c) Loudness of sound depends on _ . (d) Quality of sound depends on _ . (e) Echoes are caused by the ___ of sound .

Answer»

Fill in the following blanks with suitable words :

(a) An echo is simply a ___ sound .

(b) Pitch of sound depends on ___ .

(c) Loudness of sound depends on ___ .

(d) Quality of sound depends on ___ .

(e) Echoes are caused by the ___ of sound .

Discussion

5.	A force causes an acceleration of 10 m/s2 in a mass 500 g. What acceleration will be caused by the same force in a body of mass 5 kg.
Answer» A force causes an acceleration of $10 m / s^{2}$ in a mass 500 g. What acceleration will be caused by the same force in a body of mass 5 kg.

Discussion

6.	What is the difference between a note and a tone? Explain with an example. [3 MARKS]
Answer» What is the difference between a note and a tone? Explain with an example. [3 MARKS]

Discussion

7.	............. contain same number of neutrons in their atoms. __
Answer» ............. contain same number of neutrons in their atoms. __

Discussion

8.	In a cell, _____energy is converted into ________energy.
Answer» In a cell, _____energy is converted into ________energy.

Discussion

9.	Specific heat of a substance deals with?
Answer» Specific heat of a substance deals with?

Discussion

10.	A ball is thrown vertically upwards. It goes to a height of 20 m and then returns to the ground. Taking acceleration due to gravity g to be 10 m/s2 . Find the initial and final velocity of the ball and also find the time.
Answer» A ball is thrown vertically upwards. It goes to a height of 20 m and then returns to the ground. Taking acceleration due to gravity g to be 10 m/ $s^{2}$ . Find the initial and final velocity of the ball and also find the time.

Discussion

11.	A body starts to slide over a horizontal surface with an initial velocity of 0.5 m/s. Due to friction, its velocity deceased at the rate of 0.5 m/s2 . How much time will it take for the body to stop?
Answer» A body starts to slide over a horizontal surface with an initial velocity of 0.5 m/s. Due to friction, its velocity deceased at the rate of 0.5 m/ $s^{2}$ . How much time will it take for the body to stop?

Discussion

12.	A simple balance has two pans suspended from the ends of arms of equal length. When it is balanced, the pointer is at 0. Four masses in total are placed on the pans, with one or more on pan X and the rest on pan Y. Which combination of masses can be used to balance the pans?
Answer» A simple balance has two pans suspended from the ends of arms of equal length. When it is balanced, the pointer is at 0. Four masses in total are placed on the pans, with one or more on pan X and the rest on pan Y. Which combination of masses can be used to balance the pans?

12.

A simple balance has two pans suspended from the ends of arms of equal length. When it is balanced, the pointer is at 0. Four masses in total are placed on the pans, with one or more on pan X and the rest on pan Y. Which combination of masses can be used to balance the pans?

Answer»

A simple balance has two pans suspended from the ends of arms of equal length. When it is balanced, the pointer is at 0. Four masses in total are placed on the pans, with one or more on pan X and the rest on pan Y. Which combination of masses can be used to balance the pans?

Discussion

13.	As a cat rubs its back along a carpet, it acquires a charge of +8.2×10−7 C. How many electrons did it lose to the carpet?
Answer» As a cat rubs its back along a carpet, it acquires a charge of $+ 8.2 \times 10^{- 7} C$ . How many electrons did it lose to the carpet?

Discussion

14.	Which of the following are found in nucleus of Deuterium?
Answer» Which of the following are found in nucleus of Deuterium?

Discussion

15.	In the video Circles in everyday life Dora says rockets do not have wheels then I got a question that why rockets release fire from their bottom
Answer» In the video Circles in everyday life Dora says rockets do not have wheels then I got a question that why rockets release fire from their bottom

Discussion

16.	If a ball strikes the ground with a force of 3 N, the force exerted by the ground on the ball is _______.
Answer» If a ball strikes the ground with a force of $3 N$ , the force exerted by the ground on the ball is _______.

Discussion

17.	What is an aneroid barometer ? Draw a neat and labelled diagram to explain its construction and working.
Answer» What is an aneroid barometer ? Draw a neat and labelled diagram to explain its construction and working.

Discussion

18.	Question 13 A hockey ball of mass 200 g travelling at 10 ms−1 is struck by a hockey stick so as to return it along its original path with a velocity at 5 ms−1. Calculate the change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick.
Answer» Question 13 A hockey ball of mass 200 g travelling at $10 m s^{- 1}$ is struck by a hockey stick so as to return it along its original path with a velocity at $5 m s^{- 1}$ . Calculate the change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick.

Discussion

19.	An electron carries a ___ charge, and a proton carries a ___ charge.
Answer» An electron carries a ___ charge, and a proton carries a ___ charge.

Discussion

20.	Mention two precautions which must be taken while constructing a music hall or auditorium. [5 MARKS]
Answer» Mention two precautions which must be taken while constructing a music hall or auditorium. [5 MARKS]

Discussion

21.	If two people are pulling a box in the same direction with 85 N and 65 N force and the net displacement of the box is 18 m, then the net work done is _____.
Answer» If two people are pulling a box in the same direction with 85 N and 65 N force and the net displacement of the box is 18 m, then the net work done is _____.

Discussion

22.	Which of the following also represent the electrical energy (VIT)?
Answer» Which of the following also represent the electrical energy (VIT)?

Discussion

23.	State the relation between force and acceleration. How much force acts on a body whose momentum is constant.
Answer» State the relation between force and acceleration. How much force acts on a body whose momentum is constant.

Discussion

24.	Nanotechnology deals with particles of the order ____ m.
Answer» Nanotechnology deals with particles of the order ____ m.

Discussion

25.	A rifle of mass 5 kg fires a bullet of mass 40 g. The bullet leaves the barrel of the rifle with a velocity 200 ms−1. If the bullet takes 0.004 s to leave the barrel, calculate the following: (i) recoil velocity of the rifle and (ii) the force experienced by the rifle due to its recoil. [2 MARKS]
Answer» A rifle of mass 5 kg fires a bullet of mass 40 g. The bullet leaves the barrel of the rifle with a velocity 200 $m s^{- 1}$ . If the bullet takes 0.004 s to leave the barrel, calculate the following: (i) recoil velocity of the rifle and (ii) the force experienced by the rifle due to its recoil. [2 MARKS]

Discussion

26.	a hammer of mass M strikes a nail of mass m with velocity of u metre per second and drives it a metre into fixed block of wood . the average resistance of the wood to the penetration of nail is
Answer» a hammer of mass M strikes a nail of mass m with velocity of u metre per second and drives it a metre into fixed block of wood . the average resistance of the wood to the penetration of nail is

Discussion

27.	A body is said to be in motion when its position continously changes with respect to stationary object.Exlain this statement.
Answer» A body is said to be in motion when its position continously changes with respect to stationary object.Exlain this statement.

Discussion

28.	Differences between velocity and average velocity in circular motion
Answer» Differences between velocity and average velocity in circular motion

Discussion

29.	Can solar energy be called thermal energy? Is solar energy thermal energy?
Answer» Can solar energy be called thermal energy? Is solar energy thermal energy?

Discussion

30.	A train starting from rest, attains a velocity of 20 m/s in 2 minutes.Assuming that that the accelerations uniform, find acceleration and distance travelled by the train in 2 minutes.
Answer» A train starting from rest, attains a velocity of 20 m/s in 2 minutes.Assuming that that the accelerations uniform, find acceleration and distance travelled by the train in 2 minutes.

Discussion

31.	A bullet having mass of 20 gram moving with a speed of 100 M per second hits stationary wooden block of mass 2kg free to move and remains in the block find the speed of the block containing the bullet
Answer» A bullet having mass of 20 gram moving with a speed of 100 M per second hits stationary wooden block of mass 2kg free to move and remains in the block find the speed of the block containing the bullet

Discussion

32.	Define gravitational potential energy.
Answer» Define gravitational potential energy.

Discussion

33.	A man with normal near point 25 cm reads a book with small print using a magnifying glass, a thin convex lens of focal length 5 cm. The closest and farthest distances from the magnifying glass at which he can read the book when viewing through the magnifying glass, respectively are -
Answer» A man with normal near point $25 c m$ reads a book with small print using a magnifying glass, a thin convex lens of focal length $5 c m$ . The closest and farthest distances from the magnifying glass at which he can read the book when viewing through the magnifying glass, respectively are -

Discussion

34.	One angstrom is equal to __________ .
Answer» One angstrom is equal to __________ .

Discussion

35.	Which of the following is NOT a good fuel?
Answer» Which of the following is NOT a good fuel?

Discussion

36.	A 1kW hair dryer is used for half an hour. How much energy is used?
Answer» A 1kW hair dryer is used for half an hour. How much energy is used?

Discussion

37.	When a carpet is beaten dust raises up/falls down. Why? Is it Newton's First Law or Third Law.
Answer» When a carpet is beaten dust raises up/falls down. Why? Is it Newton's First Law or Third Law.

Discussion

38.	The quantity 87,800,000,000,000,000,000,000,000 Kg equals to _________.
Answer» The quantity 87,800,000,000,000,000,000,000,000 Kg equals to _________.

Discussion

39.	Motion of a satellite in circular orbit is an example of:
Answer» Motion of a satellite in circular orbit is an example of:

Discussion

40.	Weight of an object is ___.
Answer» Weight of an object is ___.

Discussion

41.	What is a stethoscope ? Name the principle on which a stethoscope works.
Answer» What is a stethoscope ? Name the principle on which a stethoscope works.

Discussion

42.	What is achromatic doublet?
Answer» What is achromatic doublet?

Discussion

43.	The apparent frequency of the whistle of an engine changes in the ratio of 6:5 as the engine passes a stationary observer. If the velocity of sound is 330 m/s, then the velocity of the engine is
Answer» The apparent frequency of the whistle of an engine changes in the ratio of 6:5 as the engine passes a stationary observer. If the velocity of sound is 330 m/s, then the velocity of the engine is

Discussion

44.	A body starting from rest accelerates at a constant rate of a m/s2 for some time after which it decelerates at a constant rate of b m/s2 to come to rest finally. If the total time elapsed is t s, find the maximum velocity attained by the body.
Answer» A body starting from rest accelerates at a constant rate of $a m / s^{2}$ for some time after which it decelerates at a constant rate of $b m / s^{2}$ to come to rest finally. If the total time elapsed is $t s$ , find the maximum velocity attained by the body.

Discussion

45.	A force of 1200N acts on the surface of area 10 cm² normally.What would be the pressure and thrust on the surface
Answer» A force of 1200N acts on the surface of area 10 cm² normally.What would be the pressure and thrust on the surface

Discussion

46.	The radius of a conducting wire is doubled and length is tripled. What will be the ratio of its new resistivity to the old one? Assume the temperature is constant.
Answer» The radius of a conducting wire is doubled and length is tripled. What will be the ratio of its new resistivity to the old one? Assume the temperature is constant.

Discussion

47.	Why gravitational constant is the universal constant?
Answer» Why gravitational constant is the universal constant?

Discussion

48.	A ball thrown upwards its velocity at the highest point is.
Answer» A ball thrown upwards its velocity at the highest point is.

Discussion

49.	Give reason for the following when a hanging carpet beaten with a stick the dust particles start coming out of it
Answer» Give reason for the following when a hanging carpet beaten with a stick the dust particles start coming out of it

Discussion

50.	A bullet with velocity of 10 ms-2 is brought to rest after penitrating a wooden plank of 4cm thickness. Calculate the retardation of the bullet.
Answer» A bullet with velocity of 10 ms^-2 is brought to rest after penitrating a wooden plank of 4cm thickness. Calculate the retardation of the bullet.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A boy having a mass of 50 kg. What would be his weight on the Earth? (g = 10 m/s2)

The primary coil of a transformer contains 100 turns; the secondary has 200 turns. The primary coil is connected to a size AA battery that supplies a constant voltage of 1.5 volts. What voltage would be measured across the secondary coil?

What is meant by the renewable and non- renewable sources of energy ? State two differences between them, giving two examples of each.

Fill in the following blanks with suitable words : (a) An echo is simply a ___ sound . (b) Pitch of sound depends on ___ . (c) Loudness of sound depends on ___ . (d) Quality of sound depends on ___ . (e) Echoes are caused by the ___ of sound .

A force causes an acceleration of 10 m/s2 in a mass 500 g. What acceleration will be caused by the same force in a body of mass 5 kg.

What is the difference between a note and a tone? Explain with an example. [3 MARKS]

............. contain same number of neutrons in their atoms. __

In a cell, _____energy is converted into ________energy.

Specific heat of a substance deals with?

A ball is thrown vertically upwards. It goes to a height of 20 m and then returns to the ground. Taking acceleration due to gravity g to be 10 m/s2 . Find the initial and final velocity of the ball and also find the time.

A body starts to slide over a horizontal surface with an initial velocity of 0.5 m/s. Due to friction, its velocity deceased at the rate of 0.5 m/s2 . How much time will it take for the body to stop?

A simple balance has two pans suspended from the ends of arms of equal length. When it is balanced, the pointer is at 0. Four masses in total are placed on the pans, with one or more on pan X and the rest on pan Y. Which combination of masses can be used to balance the pans?

As a cat rubs its back along a carpet, it acquires a charge of +8.2×10−7 C. How many electrons did it lose to the carpet?

Which of the following are found in nucleus of Deuterium?

In the video Circles in everyday life Dora says rockets do not have wheels then I got a question that why rockets release fire from their bottom

If a ball strikes the ground with a force of 3 N, the force exerted by the ground on the ball is _______.

What is an aneroid barometer ? Draw a neat and labelled diagram to explain its construction and working.

Question 13 A hockey ball of mass 200 g travelling at 10 ms−1 is struck by a hockey stick so as to return it along its original path with a velocity at 5 ms−1. Calculate the change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick.

An electron carries a ___ charge, and a proton carries a ___ charge.

Mention two precautions which must be taken while constructing a music hall or auditorium. [5 MARKS]

If two people are pulling a box in the same direction with 85 N and 65 N force and the net displacement of the box is 18 m, then the net work done is _____.

Which of the following also represent the electrical energy (VIT)?

State the relation between force and acceleration. How much force acts on a body whose momentum is constant.

Nanotechnology deals with particles of the order ____ m.

A rifle of mass 5 kg fires a bullet of mass 40 g. The bullet leaves the barrel of the rifle with a velocity 200 ms−1. If the bullet takes 0.004 s to leave the barrel, calculate the following: (i) recoil velocity of the rifle and (ii) the force experienced by the rifle due to its recoil. [2 MARKS]

a hammer of mass M strikes a nail of mass m with velocity of u metre per second and drives it a metre into fixed block of wood . the average resistance of the wood to the penetration of nail is

A body is said to be in motion when its position continously changes with respect to stationary object.Exlain this statement.

Differences between velocity and average velocity in circular motion

Can solar energy be called thermal energy? Is solar energy thermal energy?

A train starting from rest, attains a velocity of 20 m/s in 2 minutes.Assuming that that the accelerations uniform, find acceleration and distance travelled by the train in 2 minutes.

A bullet having mass of 20 gram moving with a speed of 100 M per second hits stationary wooden block of mass 2kg free to move and remains in the block find the speed of the block containing the bullet

Define gravitational potential energy.

A man with normal near point 25 cm reads a book with small print using a magnifying glass, a thin convex lens of focal length 5 cm. The closest and farthest distances from the magnifying glass at which he can read the book when viewing through the magnifying glass, respectively are -

One angstrom is equal to __________ .

Which of the following is NOT a good fuel?

A 1kW hair dryer is used for half an hour. How much energy is used?

When a carpet is beaten dust raises up/falls down. Why? Is it Newton's First Law or Third Law.

The quantity 87,800,000,000,000,000,000,000,000 Kg equals to _________.

Motion of a satellite in circular orbit is an example of:

Weight of an object is ___.

What is a stethoscope ? Name the principle on which a stethoscope works.

What is achromatic doublet?

The apparent frequency of the whistle of an engine changes in the ratio of 6:5 as the engine passes a stationary observer. If the velocity of sound is 330 m/s, then the velocity of the engine is

A body starting from rest accelerates at a constant rate of a m/s2 for some time after which it decelerates at a constant rate of b m/s2 to come to rest finally. If the total time elapsed is t s, find the maximum velocity attained by the body.

A force of 1200N acts on the surface of area 10 cm² normally.What would be the pressure and thrust on the surface

The radius of a conducting wire is doubled and length is tripled. What will be the ratio of its new resistivity to the old one? Assume the temperature is constant.

Why gravitational constant is the universal constant?

A ball thrown upwards its velocity at the highest point is.

Give reason for the following when a hanging carpet beaten with a stick the dust particles start coming out of it

A bullet with velocity of 10 ms​​​​​-2 is brought to rest after penitrating a wooden plank of 4cm thickness. Calculate the retardation of the bullet.

Fill in the following blanks with suitable words : (a) An echo is simply a _ sound . (b) Pitch of sound depends on _ . (c) Loudness of sound depends on _ . (d) Quality of sound depends on _ . (e) Echoes are caused by the ___ of sound .

In a cell, _energy is converted into ____energy.

An electron carries a _ charge, and a proton carries a _ charge.

A bullet with velocity of 10 ms-2 is brought to rest after penitrating a wooden plank of 4cm thickness. Calculate the retardation of the bullet.