Liquid pressure

Liquid Pressure - Quick Notes

Liquid pressure is the pressure exerted by a liquid at a given depth on the walls and bottom of the container. It depends on the depth, density of the liquid, and gravitational acceleration. The deeper you go in a liquid, the greater the pressure. Liquid pressure acts equally in all directions at a point inside the liquid. The SI unit of pressure is the pascal (Pa).

Quiz on Liquid Pressure

1. Which of the following affects the pressure exerted by a liquid at a point?

a) Depth b) Shape of container c) Volume of liquid d) Surface area of liquid

2. Pressure at a depth in a liquid depends on:

a) Depth and density only b) Volume and depth c) Surface area and height d) Mass and shape

3. What is the SI unit of pressure?

a) newton b) pascal c) joule d) watt

4. Two holes are made at different depths in a water tank. Water will come out faster from:

a) Upper hole b) Lower hole c) Both equally d) Depends on width of holes

5. If the depth of liquid is doubled, the pressure:

a) Halves b) Remains the same c) Doubles d) Triples

6. In a liquid, pressure at a point acts:

a) Upwards only b) Downwards only c) Sideways only d) In all directions equally

7. Pressure exerted by a liquid increases with:

a) Decrease in density b) Increase in area c) increase in depth d) Increase in height of container

8. If the density of a liquid is doubled, for the same depth, the pressure will:

a) Become half b) Remain same c) Double d) Triple

9. Which of these liquids will exert more pressure at the same depth?

a) Water b) Kerosene c) Mercury d) Alcohol

10. A swimmer feels more pressure:

a) Near the surface b) At greater depth c) In the middle d) Depends on the swimming style