Question

why the velocity of sound increases on the cloud day​

Answer 1

The density of air reduces as humidity and amount of water in the air increases. The speed of sound is inversely proportional to the root of density, therefore sound travels faster on a cloudy day than on a dry day so, velocity of sound increase.

Answer 2

Answer:

Here we all know that the speed of sound is inversely proportional to the density. Therefore the density of air reduces as humidity and amount of water in the air increases. Sound Travels faster on a cloudy day than on a dry day so velocity of sound increases.

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