Question

A stopper is inserted in a small hole of the glass tube of the mercury barometer below
the top level of the mercury in it. What happens when you pull out the stopper from the
glass tube?
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Answer 1

Answer:

Air will enter through the hole and all mercury will go out of tube through the bottom. the atmosphereic pressure at the level of the small hole will be greater pressure exerted by the mercury column at the point.

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