In given figure, A uniform cylindrical t...

In given figure, A uniform cylindrical tube closed at one end, contains a pallet of mercury `5cm` long. When the tube is kept verticaly with the closed end downward, the length of the air column trapped is `30cm`. Now the tube is inverted so that the closed end goes up find the new length of the air column trapped. atmospheric pressure `=75cm` of mercury. (Assume temperature remains constant in this process)

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The correct Answer is:

`(240)/(7)cm`

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