Question

how can you show that sound can't travel through a vaccum? draw a labelled diagram of the apparatus used
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Answer 1

we know that sound is a kind of transverse wave and a mechanical wave which can only travel through a medium .because transverse waves show the particle motion .

hence it can't travel through a vaccum because sound is a mechanical wave

Answer 2

Explanation:

bell jar is placed on a base and connected to a vacuum pump as shown in the picture below. The air in the jar is varied by pumping the air out of it. Now, we put an electrical bell in the bell jar. ... Thus, the sound is not audible to our ears because of the vacuum inside the jar.