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Question

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.


  1. 9000 Hz
  2. 8000 Hz
  3. 1600 Hz
  4. 7000 Hz


Solution

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

1600=f×0.02
f=8000 Hz

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