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प्रश्न
How is the reading of a barometer affected when it is taken to (i) a mine, and (ii) a hill?
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उत्तर
(i) In a mine, reading of a barometer increases.
(ii) On hills, reading of barometer decreases.
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संबंधित प्रश्न
Give reason for the following:
Water does not run out of a dropper unless its rubber bulb is pressed.
Write the numerical value of the atmospheric pressure on the surface of earth in pascal.
Name the physical quantity which is expressed in the unit 'atm'. State its value in pascal.
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.
Distinguish between the following:
Isobars and Isotherms
State briefly, how and why the atmospheric pressure of a place varies with the altitude. Draw an approximate graph to illustrate this variation.
Define Low pressure.
Give Reason for the following
Our ears pop in Airplanes.
