A source of wave produces 20 crest sand 20 troughs in 0.4 sec. Find the frequency of the wave.

asked Feb 1, 2015 48.6k views

3 votes

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3 votes

1 whole wave is 1 crest and 1 trough.

20 crests and 20 troughs is 20 whole waves.

20 waves / 0.4 seconds = 50 waves per second.

Frequency = 50 Hz

R Claven answered Feb 5, 2015

8.3k points

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