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Doppler Effect

In a ripple t...

Question

In a ripple tank,15 full ripples are produced in one second. if the distance between a trough and the next crest is 20 c.Calculate frequency

A

2 Hz

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B

12 Hz

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C

15 Hz

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D

22 Hz

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Solution

The correct option is C 15 Hz
Frequency $(f) =$ number of oscillations / time taken $= 15 / 1 = 15 s^{- 1} = 15$ Hz

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