If $v_{m}$ is the speed of sound in moist air and $v_{d}$ is the speed of sound in dry air under identical conditions of pressure and temperature, then:

v_{m} > v_{d}

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v_{m} < v_{d}

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v_{m} = v_{d}

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v_{m} . v_{d} = 1

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Solution

The correct option is A $v_{m} > v_{d}$
Under identical pressure and temperature condition, speed of sound in moist air is more than that in dry air, i.e., $v_{m} > v_{d}$

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