Question

A column of air extending up to the height of atmosphere and base of area $10cm\times 10cm$ is acting on a boy's head. Why didn't he get crushed?

• A. The pressure inside our body is also equal to the atmospheric pressure and they cancel each other out.
• B. The pressure inside our body is unequal to the atmospheric pressure.
• C. The above statement is incorrect.
• D. Can't be said.

Answer 1

The correct option is A

The pressure inside our body is also equal to the atmospheric pressure and they cancel each other out.

The pressure inside our lungs, ear, stomach is equal to the atmospheric pressure. Hence we do not feel the atmospheric pressure.

Therefore the boy didn't get crushed.