Question

Select the correct one from the statements given below:
$\left(i\right)$ At any point in a static fluid, pressure acting on it will be same in all directions.
$\left(ii\right)$ Forces acting on a fluid in equilibrium have to be parallel to the surface.

• A. $\left(i\right)$ only
• B. $\left(ii\right)$ only
• C. Both $\left(i\right)\&\left(ii\right)$
• D. None of these.

Answer 1

The correct option is A $\left(i\right)$ only


At any point in a static fluid, pressure will be the same in all directions because the point will be at rest.
$\Rightarrow P_1=P_1=P_2=P_3=P_4=P_5=P_6$
Hence, statement $\left(i\right)$ is correct.
$\because$ fluid cannot sustain shear stress, hence forces acting on the fluid in equilibrium have to be perpendicular to the free surface of the fluid.