Question

explain with the help of activity how sound is produced by bell and not heard in vacuum​

Answer 1

Answer:

By pumping the air out of the bell jar, the air pressure inside the jar can be varied. ... As the air is pumped out of the sealed bell jar, the sound from the bell jar fades. At a particular vacuum, no more sound is heard from the bell, but we can see that the hammer continues hitting the gong and sound is produced.

Answer 2

Explanation:

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