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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
  1. 2 Hz
  2. 12 Hz
  3. 15 Hz
  4. 22 Hz

A
2 Hz
B
12 Hz
C
15 Hz
D
22 Hz
Solution
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Frequency (f)= number of oscillations / time taken =15/1=15s1=15 Hz

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