A stone is dropped from a tower reaches ground in 4 s. Height of tower (g=10) is MCQ with Answer and Explanation

Question

Share Report Error

A stone is dropped from a tower reaches ground in 4 s. Height of tower (g=10) is

A. 80 m

B. 20 m

C. 40 m

D. 160 m

Answer: Option A

Solution (By JKSSB Mock Tests)

h = ½ g t² = ½×10×16 = 80 m.

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

The term 'latent heat' was introduced by

A. Kelvin

B. Joule

C. Black

D. Calorie

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
Joseph Black introduced concept of latent heat and specific heat.

This question belongs to: Science Physics

Question #2

The speed of sound in air at 0°C is 331 m/s. At 22°C, approximately

A. 350 m/s

B. 360 m/s

C. 343 m/s

D. 331 m/s

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
v ≈ 331 + 0.6×T(°C) = 331 + 0.6×22 = 331+13.2 = 344.2 m/s, nearest 343 m/s.

This question belongs to: Science Physics

Question #3

During boiling, temperature remains constant because heat is used to:

A. Increase pressure

B. Increase kinetic energy

C. Expand volume

D. Break intermolecular bonds

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
At boiling point, supplied heat (latent heat) breaks intermolecular bonds for phase change, not increasing kinetic energy (temperature). Potential energy increases while kinetic energy (temperature) stays constant. Memory aid: 'Latent heat changes state, not temperature'. Conceptual question testing phase change understanding, common in competitive exams to assess microscopic interpretation.

This question belongs to: Science Physics

Explore All Physics MCQs