Statement I: The velocity of sound increases with increase in humidity.
Statement II: Velocity of sound does not depend upon the medium.

Easy

A

If both statement I and statement II are true and statement II is the correct explanation of statement I.
B

If both statement I and statement II are true but statement II is not the correct explanation of statement I.
C

If statement I is true but statement II is false
D

If both statement I and statement II are false

Solution

Velocity of sound in gas medium is $v = \sqrt{\frac{K}{ρ}}$ = $\sqrt{\frac{γp}{ρ}}$ $γ$ is ratio of its principal heat capacities ( $\frac{C_{p}}{C_{v}}$ ). For moist air $ρ$ is less than that for dry air and $γ$ is slightly greater.
$∴$ Velocity of sound increases with increase in humidity.

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