Advertisements
Advertisements
प्रश्न
Why does it happen?
The wall of a dam is broad at its base.
Advertisements
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 :
Force acting on a unit area is called...................
Describe a simple experiment to show that at a given depth, a liquid exerts same pressure in all directions.
A dam has broader walls at the bottom than at the top. Give a reason.
Name two common fluids.
Which of the following liquids has more viscosity?
The pressure at the bottom of a tank containing liquid does not depend upon the ______.
Name an instrument used to measure the difference in the liquid pressure.
A solid floats in liquid with a portion of it being submerged. Then ______.
- The liquid exerts an upthrust equal to the weight of the solid
- The weight of the dispersed liquid is equal to the weight of solid
- Solid exerts a force equal to its weight on liquid
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.
