Question

sound can't travel in vaccum. explain with an activity​

Answer 1

Answer:

By pumping the air out of the bell jar, the air pressure inside the jar can be varied. ... However, the sound is not audible to our ears because of the vacuum inside the jar. This demonstrates that the sound wave cannot travel through vacuum. That is, a sound wave needs a material medium for its propagation

Answer 2

Explanation:

Because sound need a medium to travel like air and in vaccum there is no air

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