Question

Sound cannot travel in vaccum. Justify.​

Answer 1

$\huge\boxed{\underline{\mathcal{\red{A}\green{N}\pink{S}\orange{W}\blue{E}\pink{R}}}}$

Sound waves are mechanical waves so Sound cannot travel through a vacuum. A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work on it.

Answer 2

Sound is not an electromagnetic wave.

It is a longitudinal wave and needs a medium for propagation.

Hence sound can't travel in vacuum.