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प्रश्न
What is meant by the statement 'the atmospheric pressure at a place is 76 cm of Hg'? State its value in Pa.
उत्तर
The atmospheric pressure at a place is 76 cm of Hg means at normal temperature and pressure, the height of the mercury column supported by the atmospheric pressure is 76 cm.
76 cm of Hg = 1.013 x 105 pascal
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संबंधित प्रश्न
Write the numerical value of the atmospheric pressure on the surface of earth in pascal.
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Illustrate with the help of a labelled diagram of a simple barometer that the atmospheric pressure at a place is 76 cm of Hg.
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Give reasons for the following:
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Atmospheric pressure at sea level is 76 cm of mercury. Calculate the vertical height of the air column exerting the above pressure. Assume the density of air 1.29 kgm−3 and that of mercury is 13600 kgm−3. Why the height calculated by you is far less than the actual height of the atmosphere?
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The small variations in pressure that exist largely determine the ______ and ______ patterns of the earth.
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