The velocity of sound is maximum in MCQ with Answer and Explanation

Question Report Error

The velocity of sound is maximum in

A. Air

B. Steel

C. Water

D. Vacuum

Answer: Option B

Solution (By JKExamLibrary)

Speed of sound: solids > liquids > gases. In steel ~5000 m/s, water ~1500 m/s, air ~340 m/s. Vacuum no propagation. Speed depends on density and elasticity.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

A 50 kg person climbs 30 steps each 15 cm high in 10 s. Power (g=10) is

A. 225 W

B. 300 W

C. 150 W

D. 2250 W

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Correct Answer: Option A

Explanation:
Height = 30×0.15=4.5 m. Work = 50×10×4.5=2250 J. Power=2250/10=225 W.

This question belongs to: Science Physics

Question #2 Report Error

Sound resonance used in:

A. Musical instruments

B. Neither

C. Tuning forks

D. Both

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Correct Answer: Option D

Explanation:
Resonance amplifies sound at natural frequency: instruments (guitar body), tuning forks (frequency standard). Memory tip: 'Resonance: musical instruments (amplify), tuning forks (calibration), avoid in bridges'. Wave application frequently tested in competitive exams.

This question belongs to: Science Physics

Question #3 Report Error

Which scientist discovered the laws of planetary motion?

A. Copernicus

B. Galileo

C. Newton

D. Kepler

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Correct Answer: Option D

Explanation:
Kepler's laws of planetary motion. Newton explained them via gravitation.

This question belongs to: Science Physics

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