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प्रश्न
Name the physical quantity which is expressed in the unit 'atm'. State its value in pascal.
उत्तर
At normal temperature and pressure, the barometric height is 0.76 m of Hg at sea level which is taken as one atmosphere.
1 atmosphere = 0.76 m of Hg = 1.013 x 105 pascal
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संबंधित प्रश्न
At sea level, the atmospheric pressure is 76 cm of Hg. If air pressure falls by 10 mm of Hg per 120m of ascent, what is the height of a hill where the barometer reads 70 cm Hg. State the assumption made by you.
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
Describe an experiment to demonstrate that air exerts pressure.
What will be the effect on air pressure if the temperature drops? Why?
At higher altitudes, air becomes ______
High pressure is called ______.
Humans are sensitive even to a small variations in pressure.
Briefly explain the concept of variation of atmospheric pressure.
