Question

Sound is a longitudinal as well as a mechanical wave.

• A. True
• B. False

Answer 1

The correct option is A

True

A wave which travels parallel to the direction of motion of particles is called as longitudinal wave.

A mechanical wave is the one which requires a material medium to propagate through.

Sound travels through compressions and expansions of air. The wave travels parallel to the direction of motion of the wave. Hence it is a longitudinal wave.
Sound requires a medium to propagate which implies that it is a mechanical wave.