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  • Speed of sound wave in the air (a) is independent of temperature

Speed of sound wave in the air
(a) is independent of temperature.
(b) increases with pressure.
(c) increases with increase in humidity.
(d) decreases with increase in humidity.

 

Answers (1)

The answer is the option (c) Sound is a longitudinal wave with speed

v = \sqrt{\frac{\lambda P}{\rho}} .

The density of water vapours is less than the air so, on increasing humidity, the density of medium decreases, in turn, increasing the speed of sound in air by

v \propto \frac{1}{\rho } .

Hence, c is correct.

Posted by

infoexpert24

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