Speed of sound in dry still air _______ for each $1^{0} C$ rise in temperature.

decreases

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increases

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remains same

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decreases sharply

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Solution

The correct option is B increases
Speed of sound in dry still air increases by $0.6 m / s$ for each $1^{0} C$ rise in temperature.

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O C

330 m / s

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

In which medium the speed of sound is more :

humid air or dry air? Give a reason for your answer.

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