First slide

Pressure in a fluid-mechanical properties of fluids

Question

A beaker containing a liquid is kept inside a big closed jar. If the air inside the jar is continuously pumped out, the pressure in the liquid near the bottom of the liquid will

Moderate

A

Increases
B

Decreases
C

Remain constant
D

First decrease and then increase

Solution

Total pressure at (near) bottom of the liquid
$P = P_{0} + hρg$
As air is continuously pumped out from jar (container), P₀ decreases and hence P decreases.

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