Question

In the Earth's atmosphere, the atmospheric pressure  ________.

A

remains constant with height

B

increases with height

C

decreases with height

D

first increase and then decrease with height

Medium

Solution

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Correct option is
C

decreases with height

As we go up the pressure decreases with altitude.

This is because at higher altitudes number of air molecules present are low when compared to those that are present in the lower atmosphere.

Moreover gravitational pull which is responsible for atmospheric pressure is low on the molecules that are away from its surface than those that are closer to it.

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