If the temperature of the gas increases, then speed of sound in the gas ___.

doubles

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remains same

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increases

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decreases

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Solution

The correct option is C increases
Speed of sound in a gas is inversely proportional to the square root of density of the gas. That is, the speed of sound in a gas increases if its density decreases.

If the temperature of gas increases, then the density of gas decreases and hence, the speed of sound in gas increases.

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