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What is the frequency if a source produce 50 crests and 50 troughs in 0.5 seconds?

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50 Hz

25 Hz

100 Hz

75 Hz

answer is C.

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Detailed Solution

1 crest and 1 trough = 1 wave
Now 50 crests and 50 troughs = 50 waves
Frequency, v =

\frac{Number of wave produced}{Time taken}

\frac{50}{0.5}

= 100 Hz

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