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Air pressure ...

Question

Air pressure at sea level is ________ of mercury.

A

6 m

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B

0.36 k m

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C

60 c m

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D

0.76 m

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Solution

The correct option is D $0.76 m$
When air pressure is measure at the sea level using a mercury barometer, the height upto which the mercury column rises is $76 c m$ .
Hence the atmospheric pressure at this level is also called $0.76 m$ of mercury.

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