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प्रश्न
Why does it happen?
The wall of a dam is broad at its base.
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उत्तर
We know the pressure of liquid increases with depth. So, the wall of a dam is made broader at its base so that it is able to withstand the heavy pressure exerted by the river water.
संबंधित प्रश्न
Fill in the blank with suitable word :
If the area of a snow shoe is five times....................... than the area of an ordinary shoe, then the pressure of a snow shoe on the snow is five times...............
State two factors on which the pressure at a point in a liquid depends.
Describe an experiment to show that the liquid pressure at a point increases with the increase in height of the liquid column above that point.
The air pressure on our body is equal to ______ pressure.
Which of the following liquids has more viscosity?
Viscosity depends on the pressure of a liquid.
All flowing substances such as liquids or gases are called fluids.
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.
