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At higher altitudes, the atmospheric pre...

At higher altitudes, the atmospheric pressure is lesser as, at higher altitudes

A

the length of air column exerting the pressure is less.

B

density of air decreases.

C

acceleration due to gravity decreases.

D

All the above.

Text Solution

Verified by Experts

The correct Answer is:
D
As we move up, the air pressure decreases because the length of air column which exerts pressure, decreases.
Also, on moving up, density of air and acceleration due to gravity decrease.
Thus, the decrease in pressure if due to decrease in length of air column, density of air and acceleration due to gravity.
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