Question

if instead of fresh water sea water is filled in the tank will the velocity of the efflux change?

Answer 1

As velocity of efflux doesn't depend on the density of the liquid,so it'll not change on filling seawater in place of freshwater through seawater has high density than freshwater because of its high salinity.

Answer 2

No, the velocity of the efflux will not change if seawater is filled in the tank.

The velocity of efflux is defined as the velocity by which liquid comes out of a hole that is made in the walls of the container in which the liquid is stored.

The rate at which the liquid emerges from the hole is called the velocity of efflux.

The formula for the velocity of efflux is v = $\sqrt{2gh}$

where h is the depth of the hole from the surface of the liquid.

From the formula, we can see that the velocity of efflux depends only on the depth at which the hole is made.

If freshwater is replaced with seawater only the density of the liquid will change and the velocity of efflux does not depend on the density of the liquid hence there will be no change in the velocity.