If a bullet is fired from the gun, comes backwards, what will be the kinetic energy of the gun?

Statement I When a gun is fired, i.e. it placing pushes back with much less velocity than the velocity of the bullet.
Statement II Velocity of the recoiling gun is less because the gun is much heavier than bullet.
According to the Principle of conservation of momentum when the gun is fired, momentum of gun and bullet system remains constant.

A

Both the statements are individually true and statement II is the correct explanation of statement I

B

Both the statements are individually true but statement II is not the correct explanation of statement I

C

Statement I is true, but statement II is false

D

Statement I is false, but statement II is true

What is the kinetic energy of a bullet when a bullet is fired from a gun?

A

Less than gun

B

Infinite

C

More than gun

D

equivalent to gun

A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a gun carried on a carriage which together with the gun weighs 100 kg. The velocity of recoil of the gun, will be

A

0.01 m/sec

B

0.05 m/sec

C

1.00 m/sec

D

1.5 m/see

In which of the following energy is kinetic energy?
1. A bullet fired by a gun
2. A fast moving railway engine
3. Speed of a simple pendulum

A

1 and 3

B

2 and 3

C

1 and 2

D

1, 2 and 3

A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is

A

Zero

B

One

C

Less than one

D

More than one

A bullet of mass 12 g is fired from a rifle. The bullet takes 0.006 second to move through its barrel and leaves it with a velocity of 300 m/s. What is the force exerted on the bullet by the rifle?

A

720 Newton

B

180 Newton

C

900 Newton

D

600 Newton

A policeman fired a gun from behind a thief who was running at the rate of 12 km/h. At that point of time, the distance between policeman and thief was 400 m. When will the bullet hit the thief, if the speed of the bullet is 1 km/min?

A

After 20 seconds

B

After 30 seconds

C

After 1/2 seconds

D

After 25 seconds

Match the following Device Conversion of Energy (a) Windmill (i) Chemical Energy to electrical energy (b) Bulb (ii) Kinetic Energy to Electrical Energy (c) Electrical Cell (iii) Sound Energy to Electrical energy (d) Microphone (iv) Electrical Energy to Light Energy

A

(a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)

B

(a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)

C

(a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)

D

(a) - (iii), (b) - (ii), (c) - (iv), (d) - (i)

A gun of mass 5 kg fires a bullet of mass 0.01 kg. If the initial velocity of bullet is 250 m/s then find the recoil velocity of gun.

A

-0.50 m/s

B

+0.50 m/s

C

-0.25 m/s

D

+0.25 m/s

A bullet of mass 10gm is fired with a velocity of 40 m/s from a gun of mass 8 kg. Find the recoil velocity (in m/s) of the gun.

A

2

B

0.1

C

4

D

0.05

If a bullet is fired from the gun, comes backwards, what will be the kinetic energy of the gun?

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