13232 + Interview Questions in Physics

1.	When sound waves travel from a rarer medium to a denser medium, its speed:
Answer» When sound waves travel from a rarer medium to a denser medium, its speed:

Discussion

2.	The sound wave shown in the figure has irregular and non-periodic vibrations, what type of waveform is this?
Answer» The sound wave shown in the figure has irregular and non-periodic vibrations, what type of waveform is this?

2.

The sound wave shown in the figure has irregular and non-periodic vibrations, what type of waveform is this?

Answer»

The sound wave shown in the figure has irregular and non-periodic vibrations, what type of waveform is this?

Discussion

3.	Sohail cycles on a circular track in anticlockwise direction as shown in figure. He travels with a speed ‘V’ to cover the path AB, next with speed ‘2V’ from B to C and with a speed of ‘3V’ from C to A. What is his average speed for the total journey?
Answer» Sohail cycles on a circular track in anticlockwise direction as shown in figure. He travels with a speed ‘V’ to cover the path AB, next with speed ‘2V’ from B to C and with a speed of ‘3V’ from C to A. What is his average speed for the total journey?

Discussion

4.	The resistance of a 10 cm long wire is 12 Ω. If this wire is doubled on itself and included in a circuit, what will be the resistance of this wire?
Answer» The resistance of a 10 cm long wire is 12 Ω. If this wire is doubled on itself and included in a circuit, what will be the resistance of this wire?

Discussion

5.	The image formed in a periscope is:
Answer» The image formed in a periscope is:

Discussion

6.	A bullet of 5 g is fired from a pistol of 1.5 kg. If the recoil velocity of pistol is 1.5 ms. What is the final momentum of the pistol?
Answer» A bullet of 5 g is fired from a pistol of 1.5 kg. If the recoil velocity of pistol is 1.5 $\frac{m}{s}$ . What is the final momentum of the pistol?

Discussion

7.	How can we say time is relative and we can do time travel ? Is there any possibility
Answer» How can we say time is relative and we can do time travel ? Is there any possibility

Discussion

8.	Name the constellation in the figure.
Answer» Name the constellation in the figure.

8.

Name the constellation in the figure.

Answer»

Name the constellation in the figure.

Discussion

9.	How fast should a man of 50 kg run so that his kinetic energy be 625 j ?
Answer» How fast should a man of 50 kg run so that his kinetic energy be 625 j ?

Discussion

10.	A ball is thrown upwards with a velocity of 10ms. Find the maximum height reached by the ball.
Answer» A ball is thrown upwards with a velocity of $10 \frac{m}{s}$ . Find the maximum height reached by the ball.

Discussion

11.	Explain why big boulders can be moved easily by the flood.
Answer» Explain why big boulders can be moved easily by the flood.

Discussion

12.	Which of the following can sometimes be 'zero' for a moving body ? (i)average velocity (ii) distance travelled (iii) average speed (iv) displacement (a) only (i) (b) (i) and (ii) (c) (i) and (iv) (d) only (iv)
Answer» Which of the following can sometimes be 'zero' for a moving body ? (i)average velocity (ii) distance travelled (iii) average speed (iv) displacement (a) only (i) (b) (i) and (ii) (c) (i) and (iv) (d) only (iv)

12.

Which of the following can sometimes be 'zero' for a moving body ? (i)average velocity (ii) distance travelled (iii) average speed (iv) displacement (a) only (i) (b) (i) and (ii) (c) (i) and (iv) (d) only (iv)

Answer»

Which of the following can sometimes be 'zero' for a moving body ?

(i)average velocity

(ii) distance travelled

(iii) average speed

(iv) displacement

(a) only (i) (b) (i) and (ii) (c) (i) and (iv) (d) only (iv)

Discussion

13.	A 12 g bullet is accelerated from rest to a speed of 700 m/s as it travels 20 cm in gun barrel. Assuming the acceleration to be constant, how large was the accelerating force?
Answer» A 12 g bullet is accelerated from rest to a speed of 700 m/s as it travels 20 cm in gun barrel. Assuming the acceleration to be constant, how large was the accelerating force?

Discussion

14.	From where does the electricity come to your home?
Answer» From where does the electricity come to your home?

Discussion

15.	What will happen to the resistance of the filament when the bulb glows?
Answer» What will happen to the resistance of the filament when the bulb glows?

Discussion

16.	Work done when a massless object is moved by a displacement 's' under the action of force F?
Answer» Work done when a massless object is moved by a displacement 's' under the action of force F?

Discussion

17.	A boy has a mass of 50kg. What would be his weight on the Earth? (g=10 m/sec2)
Answer» A boy has a mass of 50kg. What would be his weight on the Earth? $(g = 10 m / {s e c}^{2})$

Discussion

18.	Two bodies of same masses aee placed at height h and 2h. Compare their gravitational potential energy.
Answer» Two bodies of same masses aee placed at height h and 2h. Compare their gravitational potential energy.

Discussion

19.	Why don't we directly perceive the motion of the earth, without seeing the movement of stars etc. ?
Answer» Why don't we directly perceive the motion of the earth, without seeing the movement of stars etc. ?

Discussion

20.	Which of the following combinations of forces keeps the cart rolling towards right with a constant velocity?
Answer» Which of the following combinations of forces keeps the cart rolling towards right with a constant velocity?

Discussion

21.	When you push the wall with your hand what happens ?
Answer» When you push the wall with your hand what happens ?

Discussion

22.	What is difference between distance and displacement. what do you mean by magnitude in this definition?
Answer» What is difference between distance and displacement. what do you mean by magnitude in this definition?

Discussion

23.	It is difficult to balance our body when we accidentally slip on a peel of banana. Explain why?
Answer» It is difficult to balance our body when we accidentally slip on a peel of banana. Explain why?

Discussion

24.	A car of mass 1800 kg moves with a speed of 10 metre per second is brought to rest after covering distance of 50m calculate the applied force to the car
Answer» A car of mass 1800 kg moves with a speed of 10 metre per second is brought to rest after covering distance of 50m calculate the applied force to the car

Discussion

25.	defination and explination of electrical circut
Answer» defination and explination of electrical circut

Discussion

26.	The zero error in the following case is
Answer» The zero error in the following case is

26.

The zero error in the following case is

Answer»

The zero error in the following case is

Discussion

27.	Can sound travel through vacuum ?
Answer» Can sound travel through vacuum ?

Discussion

28.	Calculate the work done in pushing the card through distance of 15 against the force of friction equal to 250 Newton state the type of work done
Answer» Calculate the work done in pushing the card through distance of 15 against the force of friction equal to 250 Newton state the type of work done

Discussion

29.	What is the cause of gravity?
Answer» What is the cause of gravity?

Discussion

30.	Particles continuously move. Solids are tightly packed so they vibrate, so shouldn't they produce sound ?
Answer» Particles continuously move. Solids are tightly packed so they vibrate, so shouldn't they produce sound ?

Discussion

31.	What is HP
Answer» What is HP

Discussion

32.	definition of displacement
Answer» ^{definition of displacement}

Discussion

33.	The SI unit of centre of mass is
Answer» The SI unit of centre of mass is

Discussion

34.	State two factors which affect the atmospheric pressure as we go up.
Answer» State two factors which affect the atmospheric pressure as we go up.

Discussion

35.	A body having 5 kg mass is travelling with a certain velocity and has momentum 10 kg m s−1. What will be its kinetic energy?
Answer» A body having $5 k g$ mass is travelling with a certain velocity and has momentum $10 k g m s^{- 1}$ . What will be its kinetic energy?

Discussion

36.	Diya weighed 45 N at a hospital. Her weight on the Moon would be .
Answer» Diya weighed 45 N at a hospital. Her weight on the Moon would be .

Discussion

37.	Consider the following statements about the blocks shown in the diagram that are being pushed by a constant force on a frictionless table: (i) All block moves with the same acceleration (ii) The forces acting on each block are the same
Answer» Consider the following statements about the blocks shown in the diagram that are being pushed by a constant force on a frictionless table: (i) All block moves with the same acceleration (ii) The forces acting on each block are the same

37.

Consider the following statements about the blocks shown in the diagram that are being pushed by a constant force on a frictionless table: (i) All block moves with the same acceleration (ii) The forces acting on each block are the same

Answer»

Consider the following statements about the blocks shown in the diagram that are being pushed by a constant force on a frictionless table:

(i) All block moves with the same acceleration

(ii) The forces acting on each block are the same

Discussion

38.	Use the following information to answer the next question. A car is moving uniformly on a highway with a velocity of 72 km/h. Suddenly, the driver applies the brakes and reduces its velocity to 9 km/h in 10 seconds. What is the distance travelled by the car in these 10 seconds?
Answer» Use the following information to answer the next question. A car is moving uniformly on a highway with a velocity of 72 km/h. Suddenly, the driver applies the brakes and reduces its velocity to 9 km/h in 10 seconds. What is the distance travelled by the car in these 10 seconds?

38.

Use the following information to answer the next question. A car is moving uniformly on a highway with a velocity of 72 km/h. Suddenly, the driver applies the brakes and reduces its velocity to 9 km/h in 10 seconds. What is the distance travelled by the car in these 10 seconds?

Answer»

Use the following information to answer the next question.

A car is moving uniformly on a highway with a velocity of 72 km/h. Suddenly, the driver applies the brakes and reduces its velocity to 9 km/h in 10 seconds.

What is the distance travelled by the car in these 10 seconds?

Discussion

39.	Find out the image position formed by concave mirror, considering the image formed by mirror as an object for concave mirror.
Answer» Find out the image position formed by concave mirror, considering the image formed by mirror as an object for concave mirror.

39.

Find out the image position formed by concave mirror, considering the image formed by mirror as an object for concave mirror.

Answer»

Find out the image position formed by concave mirror, considering the image formed by mirror as an object for concave mirror.

Discussion

40.	A sharp edge blade is more effective in cutting than a blunt blade due to .
Answer» A sharp edge blade is more effective in cutting than a blunt blade due to .

Discussion

41.	When is the gravitational potential energy of a body is positive or negative?
Answer» When is the gravitational potential energy of a body is positive or negative?

Discussion

42.	Which aspect of a sound wave is related to the loudness?
Answer» Which aspect of a sound wave is related to the loudness?

Discussion

43.	A truck moves at 36 kmh−1. It increases its velocity to 90 kmh−1 in 0.1 minute. What is the acceleration of the truck?
Answer» A truck moves at $36 k m h^{- 1}$ . It increases its velocity to $90 k m h^{- 1}$ in $0.1 m i n u t e$ . What is the acceleration of the truck?

43.

A truck moves at 36 kmh−1. It increases its velocity to 90 kmh−1 in 0.1 minute. What is the acceleration of the truck?

Answer»

A truck moves at $36 k m h^{- 1}$ . It increases its velocity to $90 k m h^{- 1}$ in $0.1 m i n u t e$ .

What is the acceleration of the truck?

Discussion

44.	In a convex lens, ray parallel to the principal axis after refraction passes through which of the following?
Answer» In a convex lens, ray parallel to the principal axis after refraction passes through which of the following?

Discussion

45.	A bar magnet is cut into three parts. How many north poles will we get?
Answer» A bar magnet is cut into three parts. How many north poles will we get?

Discussion

46.	The gravitational force of attraction between two bodies of masses 40 kg and 80 kg separated by a distance of 15 m is: (Take Gravitational constant, G=6.673×10−11Nm2kg−2)
Answer» The gravitational force of attraction between two bodies of masses $40 k g$ and $80 k g$ separated by a distance of $15 m$ is: (Take Gravitational constant, $G = 6.673 \times 10^{- 11} N m^{2} k g^{- 2}$ )

Discussion

47.	Complete the following sentences : (a) If the field lines in a magnetic field are parallel and equidistant, the magnetic field is ............. (b) At a neutral point, the resultant magnetic field is .......... (c) The neutral points of a bar magnet kept with its north pole pointing towards geographic north are located .......................
Answer» Complete the following sentences : (a) If the field lines in a magnetic field are parallel and equidistant, the magnetic field is ............. (b) At a neutral point, the resultant magnetic field is .......... (c) The neutral points of a bar magnet kept with its north pole pointing towards geographic north are located .......................

47.

Complete the following sentences : (a) If the field lines in a magnetic field are parallel and equidistant, the magnetic field is ............. (b) At a neutral point, the resultant magnetic field is .......... (c) The neutral points of a bar magnet kept with its north pole pointing towards geographic north are located .......................

Answer»

Complete the following sentences :

(a) If the field lines in a magnetic field are parallel and equidistant, the magnetic field is .............

(b) At a neutral point, the resultant magnetic field is ..........

(c) The neutral points of a bar magnet kept with its north pole pointing towards geographic north are located .......................

Discussion

48.	Question 28 Compare the power at which each of the following is moving upwards against the force of gravity? (i) A butterfly of mass 1.0 g that flies upward at a rate of 0.5 ms−1 (ii) A 250 g squirrel climbing up on a tree at a rate of 0.5 ms−1
Answer» Question 28 Compare the power at which each of the following is moving upwards against the force of gravity? (i) A butterfly of mass 1.0 g that flies upward at a rate of $0.5 m s^{- 1}$ (ii) A 250 g squirrel climbing up on a tree at a rate of $0.5 m s^{- 1}$

Discussion

49.	A bullet initially moving with a velocity with a velocity 20 m -¹ strike a target and comes to rest after penetrating a distance 10cm in the target. Calculate the retardation caused by the target.
Answer» A bullet initially moving with a velocity with a velocity 20 m -¹ strike a target and comes to rest after penetrating a distance 10cm in the target. Calculate the retardation caused by the target.

Discussion

50.	A train starting from rest moves with a uniform acceleration of 0.2 m/s2 for 5 minutes. Calculate the speed acquired and the distance travelled in this time.
Answer» A train starting from rest moves with a uniform acceleration of 0.2 $m / s^{2}$ for 5 minutes. Calculate the speed acquired and the distance travelled in this time.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

When sound waves travel from a rarer medium to a denser medium, its speed:

The sound wave shown in the figure has irregular and non-periodic vibrations, what type of waveform is this?

Sohail cycles on a circular track in anticlockwise direction as shown in figure. He travels with a speed ‘V’ to cover the path AB, next with speed ‘2V’ from B to C and with a speed of ‘3V’ from C to A. What is his average speed for the total journey?

The resistance of a 10 cm long wire is 12 Ω. If this wire is doubled on itself and included in a circuit, what will be the resistance of this wire?

The image formed in a periscope is:

A bullet of 5 g is fired from a pistol of 1.5 kg. If the recoil velocity of pistol is 1.5 ms. What is the final momentum of the pistol?

How can we say time is relative and we can do time travel ? Is there any possibility

Name the constellation in the figure.

How fast should a man of 50 kg run so that his kinetic energy be 625 j ?

A ball is thrown upwards with a velocity of 10ms. Find the maximum height reached by the ball.

Explain why big boulders can be moved easily by the flood.

Which of the following can sometimes be 'zero' for a moving body ? (i)average velocity (ii) distance travelled (iii) average speed (iv) displacement (a) only (i) (b) (i) and (ii) (c) (i) and (iv) (d) only (iv)

A 12 g bullet is accelerated from rest to a speed of 700 m/s as it travels 20 cm in gun barrel. Assuming the acceleration to be constant, how large was the accelerating force?

From where does the electricity come to your home?

What will happen to the resistance of the filament when the bulb glows?

Work done when a massless object is moved by a displacement​ 's' under the action of force F?

A boy has a mass of 50kg. What would be his weight on the Earth? (g=10 m/sec2)​

Two bodies of same masses aee placed at height h and 2h. Compare their gravitational potential energy.

Why don't we directly perceive the motion of the earth, without seeing the movement of stars etc. ?

Which of the following combinations of forces keeps the cart rolling towards right with a constant velocity?

When you push the wall with your hand what happens ?

What is difference between distance and displacement. what do you mean by magnitude in this definition?

It is difficult to balance our body when we accidentally slip on a peel of banana. Explain why?

A car of mass 1800 kg moves with a speed of 10 metre per second is brought to rest after covering distance of 50m calculate the applied force to the car

defination and explination of electrical circut

The zero error in the following case is

Can sound travel through vacuum ?

Calculate the work done in pushing the card through distance of 15 against the force of friction equal to 250 Newton state the type of work done

What is the cause of gravity?

Particles continuously move. Solids are tightly packed so they vibrate, so shouldn't they produce sound ?

What is HP

definition of displacement

The SI unit of centre of mass is

State two factors which affect the atmospheric pressure as we go up.

A body having 5 kg mass is travelling with a certain velocity and has momentum 10 kg m s−1. What will be its kinetic energy?

Diya weighed 45 N at a hospital. Her weight on the Moon would be .

Consider the following statements about the blocks shown in the diagram that are being pushed by a constant force on a frictionless table: (i) All block moves with the same acceleration (ii) The forces acting on each block are the same

Use the following information to answer the next question. A car is moving uniformly on a highway with a velocity of 72 km/h. Suddenly, the driver applies the brakes and reduces its velocity to 9 km/h in 10 seconds. What is the distance travelled by the car in these 10 seconds?

Find out the image position formed by concave mirror, considering the image formed by mirror as an object for concave mirror.

A sharp edge blade is more effective in cutting than a blunt blade due to .

When is the gravitational potential energy of a body is positive or negative?

Which aspect of a sound wave is related to the loudness?

A truck moves at 36 kmh−1. It increases its velocity to 90 kmh−1 in 0.1 minute. What is the acceleration of the truck?

In a convex lens, ray parallel to the principal axis after refraction passes through which of the following?

A bar magnet is cut into three parts. How many north poles will we get?

The gravitational force of attraction between two bodies of masses 40 kg and 80 kg separated by a distance of 15 m is: (Take Gravitational constant, G=6.673×10−11Nm2kg−2)

Question 28 Compare the power at which each of the following is moving upwards against the force of gravity? (i) A butterfly of mass 1.0 g that flies upward at a rate of 0.5 ms−1 (ii) A 250 g squirrel climbing up on a tree at a rate of 0.5 ms−1

A bullet initially moving with a velocity with a velocity 20 m -¹ strike a target and comes to rest after penetrating a distance 10cm in the target. Calculate the retardation caused by the target.

A train starting from rest moves with a uniform acceleration of 0.2 m/s2 for 5 minutes. Calculate the speed acquired and the distance travelled in this time.

Work done when a massless object is moved by a displacement 's' under the action of force F?

A boy has a mass of 50kg. What would be his weight on the Earth? (g=10 m/sec2)