If velocity of sound in a gas is 360 m/s and the distance between a compression and the nearest rarefaction is 1 m, then the frequency of sound is

90 Hz

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180 Hz

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360 Hz

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720 Hz

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Solution

The correct option is B 180 Hz
Distance between a compression and the nearest rarefaction is $\frac{λ}{2} = 1 m .$ Hence
$n = \frac{v}{λ} = \frac{360}{2} = 180$ Hz

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