Question

Which all of the following are true about liquid pressure?

• A. Inside the liquid, pressure increases with the increase in depth from its free surface.
• B. A liquid can not exert pressure
• C. In a stationary liquid, the pressure is same at all points on a horizontal plane.
• D. Pressure is the same in all directions about a point inside the liquid.

Answer 1

Answer: (A), (C), (D)

Pressure is the same in all directions about a point inside the liquid.

The following are true

i) Inside the liquid, pressure increases with the increase in depth from its free surface. The pressure at depth $h$ is given by $\rho gh$ where $\rho$ is density and $g$ acceleration due to gravity

ii) In a stationary liquid, the pressure is the same at all points on a horizontal plane.

iii) Pressure is the same in all directions about a point inside the liquid.

iv) Pressure is defined as force per unit area. Liquids exert force due to their weight which will create pressure. so option D is incorrect.