Qstnid -I-7-a One Meter Long Glass Tube Is Open At Both Ends. One End Of The Tube Is Dipped Into A Mercury Cup, The Tube Is Kept Vertical And The Air Is Pumped Out Of The Tube By Connecting The Upper End To A Suction Pump. Can Mercury Be Pulled Up Into The Pump By This Process? - 13: Fluid Mechanics

with Solutions -

#7
A one meter long glass tube is open at both ends. One end of the tube is dipped into a mercury cup, the tube is kept vertical and the air is pumped out of the tube by connecting the upper end to a suction pump. Can mercury be pulled up into the pump by this process?
Ans : No, mercury cannot be pulled up into the pump by this process. The level up to which mercury can rise is 76 cm (to maintain equal pressure at points A and B).

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