1.

A vertical glass capillary tube, open at both ends, contains some water. Which of the following shapes may not be taken by the water in the tube ?

Answer»

Solution :The mercury level does not CHANGE, because there is VACUUM above the mercury level. Hence no pressure is on the mercury. ALSO, the weight of mercury COLUMN must be equal to the aer pressure above the reservoir. Hence there will be no change in the HEIGHT of the mercury column.


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