Sawaal
6
Q:

Sound waves cannot travel in

A) Vacuum B) Water
C) Glass D) Hydrogen gas

Answer:   A) Vacuum



Explanation:

A Sound wave needs a medium for propogation. Hence, 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 in.

Subject: Physics
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