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Question

A scientist performed an experiment as shown in the picture here.
Figure

What do you think happened as air was pumped out of the jar and he rang the bell?
(a) The sound became louder.
(b) The sound became fainter first and then louder once all the air was pumped out.
(c) The sound could not be heard anymore.
(d) The sound was the same as before.

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Solution

(c) The sound could not be heard anymore.

The sound could not be heard any more because it requires a medium for its propagation.


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