Question

If $v_m$ is the velocity of sound in moist air and $v_d$ is the velocity of sound in dry air, then ________.

• A. $v_m<v_d$
• B. $v_m>v_d$
• C. $v_m=v_d$
• D. None of these

Answer 1

The correct option is A $v_m<v_d$

Moist air will be denser than the dry air. As velocity of sound decreases with increase in density, velocity will be less in the moist air.

$v=\sqrt{\frac{Elasticitycoefficient}{density}}$

Option A is correct.