Q. 9

Consider the barometer shown in figure (13-Q1). If a small hole is made at a point P in the barometer tube, will the mercury come out from this hole?



Answer :

The pressure at point P (given by ρgh where h is the height of point P) is less than the atmospheric pressure (given by ρ0gH where H is the height of the mercury column). The outside pressure is atmospheric pressure. As the pressure at point P is less than atmospheric pressure, the liquid will not flow out.


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