The incorrect statement from the following is :

1. The pressure exerted by the liquid filled in a vessel is same at all points.
2. The pressure of liquid is same in all directions in a horizontal plane.
3. The pressure of a liquid on a surface does not depend on the area of surface.
4. The pressure of liquid at its free surface is zero.

Define the term thrust. State it's S.I. unit.

How is the unit bar related to the S.I. unit pascal ?

Define one pascal (Pa), the S.I. unit of pressure.