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प्रश्न
How is water drawn up from a well by a water pump?
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उत्तर
In a water pump, on pulling the piston up, the pressure of air inside the siphon decreases and the atmospheric pressure on the water outside increases. As a result, the atmospheric pressure pushes the water up in pump.
संबंधित प्रश्न
How does the atmospheric pressure change with altitude?
Name the physical quantity which is expressed in the unit 'atm'. State its value in pascal.
What is an aneroid barometer? Draw a neat and labelled diagram to explain its construction and working.
How is the reading of a barometer affected when it is taken to (i) a mine, and (ii) a hill?
Give reasons for the following:
As we go higher, the atmospheric pressure decreases.
How is the reading of a barometer affected when it is taken to: A mine
A low-pressure system is also called ______ and ______.
It is much easier to burst an inflated balloon with a needle than by a finger. Explain.
The air pressure at sea level is referred to as ______.
