Question

The pressure at depth h below the surface of a liquid of density `rho` open to the atmosphere is
A. greater than the atmospheric pressure by `rhogh`
B. less than the atmospheric pressure by `rhogh`
C. equal to the atmospheric pressure
D. increases exponentially with depth

Answer 1

Correct Answer - A
The pressure at depth h below the surface of a liquid of density `rho` open to the atmosphere is `P=P_(a)+rhogh`
where `P_(a)` is the atmosphere pressure.
Thus, pressure P at depth h below the surface of a liquid open to the atmosphere is greater than the atmospheric pressure by an amount `rhogh`.