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प्रश्न
A dam has broader walls at the bottom than at the top. Give a reason.
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उत्तर
To withstand the greater pressure of water which increases with increase in depth.
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संबंधित प्रश्न
Name the quantity whose one of the units is pascal (Pa).
Higher we go, greater is the air pressure.
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Pressure inside a liquid increases with
Describe a simple experiment to show that at a given depth, a liquid exerts same pressure in all directions.
Viscosity depends on the pressure of a liquid.
What is lateral pressure?
State whether the liquids and gases also exert pressure.
Differentiate Liquid from Gas
Assertion (A): The force acting on the surface of a liquid at rest, under gravity, in a container is always horizontal.
Reason (R): The forces acting on a fluid at rest have to be normal to the surface.
