A bullet of mass 20 g fired from a gun of mass 5 kg with speed 500 m/s. Recoil velocity of gun is MCQ with Answer and Explanation

Question

Share Report Error

A bullet of mass 20 g fired from a gun of mass 5 kg with speed 500 m/s. Recoil velocity of gun is

A. 2 m/s

B. 1 m/s

C. 0.5 m/s

D. 2.5 m/s

Answer: Option A

Solution (By JKSSB Mock Tests)

Momentum conservation: 0 = 0.02×500 + 5×v => v = -10/5 = -2 m/s (magnitude 2 m/s).

This question belongs to: Science Physics

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Physics Questions

Question #1

C.V. Raman was awarded Nobel Prize for his work on

A. Raman effect

B. X-rays

C. Nuclear fission

D. Photoelectric effect

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Raman effect: inelastic scattering of light, 1928, Nobel 1930.

This question belongs to: Science Physics

Question #2

A ball is dropped from a height of 5 m on a floor and rebounds to 1.25 m. Coefficient of restitution is

A. 1

B. 0.8

C. 0.25

D. 0.5

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
e = √(h₂/h₁) = √(1.25/5) = √0.25 = 0.5.

This question belongs to: Science Physics

Question #3

The thermometric liquid generally used in clinical thermometer is

A. Alcohol

B. Mercury

C. Glycerine

D. Water

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option B

Explanation:
Mercury used due to uniform expansion, visibility, high boiling point.

This question belongs to: Science Physics

Explore All Physics MCQs