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In the bell jar experiment, after starting the vacuum pump the

Question

In the bell jar experiment, after starting the vacuum pump the sound gradually become fainter and finally we hear a feeble sound. Why?

A

The Vacuum pump absorbs the sound

B

The medium is sucked by the pump

C

The bell jar behaves as isolated medium

D

The bell do not produce such strong sound as it was producing earlier.

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In the bell jar experiment, after starting the vacuum pump the sound gradually become fainter and finally we hear a feeble sound. Why?

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Text solutionVerified

Sound needs a medium to travel. The vacuum pump pumps out the air, and thus the medium through which the sound travels is pumped out and so the sounds gets fainter.

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Question Text	In the bell jar experiment, after starting the vacuum pump the sound gradually become fainter and finally we hear a feeble sound. Why?
Answer Type	Text solution:1
Upvotes	150