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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
State the units in which pressure is measured.
What force acting on an area of 0.5 m2 will produce a pressure of 500 Pa ?
Fill in the blank with suitable word :
Force acting on a unit area is called...................
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In order to sink in a fluid, the density of an object must be .................. than the ................ of the fluid.
Describe the crushing tin can experiment. What do you conclude from this experiment?
Which of the following liquids has more viscosity?
Liquid pressure decreases with the decrease of depth.
Figure shows a container filled with water. Which of the following statements is correct about pressure of water?
A liquid flowing out of a very small opening of a tube or tap comes out in the form of fine drops and not as a continuous stream. Why?
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.
