Question

Which all of the following are true about liquid pressure?

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

Answer 1

Answer: (A), (B), (C)

Inside the liquid, pressure increases with the increase in depth from its free surface.

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.