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Question

Assertion :Sound would travel faster on a hot summer day than on cold winter day. Reason: Velocity of sound is directly proportional to the square root of its absolute temperature.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The velocity of sound in a gas is directly proportional to the square root of its absolute temperature (v=ρRTM). Since, temperature of a hot day is more than cold winter day, therefore sound would travel faster on hot summer day than on a cold winter day.

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