Question

As height above sea level increases, atmospheric pressure

• A. remains the same
• B. increases
• C. decreases
• D. none of the above

Answer 1

The correct option is C

decreases

The explanation for correct option:

Option (C):

1. The force or thrust exerted by the air on the unit area is called atmospheric pressure.
2. Its numerical value is $76cm$ of Hg.
3. Atmospheric pressure varies with altitude because the density of air decreases as height increases.
4. Thus atmospheric pressure decreases with an increase in altitude.

Hence, option C is correct.