Answers

2016-03-11T22:45:07+05:30
In the bell jar there will be no air it will be pumped out and there will be a bell in the jar if it is vibrated also we do not hear the sound .

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2016-03-16T20:01:50+05:30
in the bell jar there will be no air it will be pumped out and there will be a bell in the jar if it is vibrated also we do not hear the sound .
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