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प्रश्न
What is meant by atmospheric pressure?
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उत्तर
The weight of air above a given area on the earth’s surface is called atmospheric pressure or air pressure.
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संबंधित प्रश्न
Write the numerical value of the atmospheric pressure on the earth surface in pascal.
Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.
How is the reading of a barometer affected when it is taken to (i) a mine, and (ii) a hill?
How does the atmospheric pressure change with altitude? Draw an approximate graph to show this variation.
What is an altimeter? State its principle. How is its scale calibrated?
What do the following indicate in a barometer regarding weather : gradual fall in the mercury level
What do the following indicate in a barometer regarding weather : sudden fall in the mercury level
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.
At a given place, a mercury barometer records a pressure of 0.70 m of Hg. What would be the height of water column if mercury in barometer is replaced by water? Take density of mercury to be = 13.6 × 103 kg m-3.
Air pressure is expressed in ______.
