Question

Sound wave needs a medium for its propagation.

• A. Yes
• B. No

Answer 1

The correct option is A

Yes

The sound is a disturbance that propagates through a medium. The disturbance travels in the medium in form of waves. Hence, it needs a medium for its propagation. Sound cannot propagate in vacuum since there are no particles that can vibrate in vacuum. On moon, there is no medium, therefore one can not hear the sound produced by others.