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प्रश्न
Air pressure is expressed in ______.
पर्याय
millibars
millimetres
millilitres
milligrams
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उत्तर
Air pressure is expressed in millibars.
संबंधित प्रश्न
State two experiences that made you think that air exerts pressure.
What do you understand by atmospheric pressure?
Name the physical quantity which is expressed in the unit 'atm'. State its value in pascal.
Describe an experiment to demonstrate that air exerts pressure.
Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.
State two factors which affect the atmospheric pressure as we go up.
At sea level, the atmospheric pressure is 1.04 x 105 Pa. Assuming g = 10 m s-2 and density of air to be uniform and equal to 1.3 kg m-3, find the height of the atmosphere.
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 .
Give reasons for the following:
As we go higher, the atmospheric pressure decreases.
Describe an experiment to demonstrate that air exerts pressure.
