A sound wave having a wavelength of 2 cm is travelling in water. If the velocity of sound in water is 1600 m/s. Find the frequency of the sound wave.

8000 Hz

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1600 Hz

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7000 Hz

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9000 Hz

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Solution

The correct option is A 8000 Hz
Speed of a wave is given by:
$v = f λ$
where:
$f :$ Frequency
$λ :$ Wavelength

$1600 = f \times 0.02$
$f = 8000 H z$

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A sound wave having a wavelength of 2 cm is travelling in water. If the velocity of sound in water is 1600 m/s. Find the frequency of the sound wave.

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