Question

What happens to the sound made by an
electric bel inside a jar, when the air is sucked
out of the jar using a vacuum pump?​

Answer 1

Answer:

First of all perfect vacuum can't be created anywhere on earth so the sound that the bell will produce will be less than 20hz . So We can see the bell ringing but can't hear it.

Because the law of sound says that sound needs a medium to propagate.

Answer 2

Answer:

No sound is heard.

Explanation:

When the air is sucked out of the jar using a vacuum pump, after some time no air os left within the jar. Hence, no sound is heard as sound cannot travel through a vacuum.

The reason is that when no air is left in the jar, the sound does not reach us, although the bell is still ringing (or vibrating).

Hope it helps!

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