A sound wave having a wavelength of $20 c m$ is traveling in water. If the velocity of sound in water is $1600 m / s$ . Find the frequency of the sound wave.

True

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False

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7000 Hz

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1600 Hz

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Solution

The correct option is B
False

We know that,
Speed of a wave $= F r e q u e n c y \times W a v e l e n g t h .$
As, Speed $= 1600 m / s$
and Wavelength = $0.2 m$

$F r e q u e n c y = \frac{1600}{0.2} = 8000 H z .$

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