The pressure at the bottom of a tank containing a liquid does not depend on

$A$ sudden drop in the mercury level by $10 \,mm$ or more is a sign of ..........

The heights of mercury in a barometer at the base and at the top of a mountain are $75 \, cm$ and $50 \, cm$,respectively. If the ratio of the density of mercury to the density of air is $10^4$,what is the height of the mountain?

The diagram shows a simple mercury barometer. Which of the following does not cause the height of the mercury column to vary?

If the atmospheric pressure is $P_a$,then the pressure $P$ at depth $h$ below the surface of a liquid of density $\rho$ open to the atmosphere is:

$A$ container of height $10 \, cm$ is filled with water. There is a hole at the bottom. Find the pressure difference between points at the top and the bottom.