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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
What name is given to thrust per unit area ?
What are fluids ? Name two common fluids.
A liquid exerts pressure in all directions.
Gases exert pressure in all directions.
Pressure exerted by a liquid is due to it
Liquid pressure decreases with the decrease of depth.
Describe an experiment to prove that the pressure in a liquid increase with depth.
State whether true or false. If false, correct the statement.
The shape of an object helps to determine whether the object will float or not
If the volume of the object is above the water surface, then the object is less dense.
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.
