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The speed of sound in moist air is greater than that in dry air.

(a) True

(b) False

I have been asked this question during an online exam.

This is a very interesting question from Reverberation in section Waves of Engineering Physics I

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The correct option is (a) True

Explanation: The density of water vapour is less than that of air. So the density of air mixed with water vapour is less than that of dry air. Hence the speed of sound in moist air is greater than that in dry air.

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