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प्रश्न
What do you understand by atmospheric pressure?
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उत्तर
The thrust exerted per unit area of the earth surface due to column of air, is called the atmospheric pressure on the earth surface.
संबंधित प्रश्न
State two experiences that made you think that air exerts pressure.
How does the pressure at a certain depth in sea water differ from that at the same depth in river water? Explain your answer.
Explain how is the height of mercury column in tube of a simple barometer, a measure of the atmospheric pressure.
How does the atmospheric pressure change with altitude? Draw an approximate graph to show this variation.
Convert 1 mm of Hg into pascal. Take density of Hg = 13.6 x 103 kg m-3 and g = 9.8 m s-2 .
State two factors which affect the atmospheric pressure as we go up.
The atmosphere is a layer of gases surrounding the planet.
The highest air pressure at sea level was recorded at ______ Russia.
Why do Scuba divers wear special suits and equipment?
The increase in internal energy of 1 kg of water at 100°c when it is converted into steam at the same temperature and at 1 atmospheric pressure will be ______.
(density of steam is 0.6 kg m-3, latent heat of vaporisation of water = 2.25 × 106 J kg-1).
