Question

Select the only false statement out of the following

• A. Sound travels as a wave,
• B. In air, sound waves are longitudinal waves.
• C. Only vibrating objects produce sound.
• D. Sound travels faster in vacuum than in air.

Answer 1

The correct option is D

Sound travels faster in vacuum than in air.

Explanation for the correct option(s)

D: Sound travels in vacuum than in air:

1. Sound waves are mechanical waves which require a material medium to travel.
2. Hence, sound can't travel through vacuum.

Explanation for the incorrect option(s)

1. A sound wave is an example of a longitudinal wave and is produced by the vibrating motion of the particles that travel through medium.
2. An example of sound waves is a vibration of tuning fork.

Hence, the correct option is (D).