Assertion :On a rainy day sound travel faster than on a dry day. Reason: When moisture is present in air the density of air increases.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Density of water vapour is lesses than that of dry air.
Hence when water vapour is present in air, the density of air is lesser.
On a rainy day, water vapour content in air is more than any other day.
Hence on a rainy day, the density of air is lesser.
Speed of sound in air is inversely proportional to the square root of its density.
Sound travels faster in lighter air than in the heavier one.
On a rainy day sound travel faster than on a dry day.

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