Physics
A source of wave produces 40 crests and 40 troughs in 0.4 s. What is the frequency of the wave?
Sound Waves Propagation
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Answer
Given,
One crest and one trough make one wave, hence there are 40 waves.
time (t) = 0.4 s
frequency f = ?
Frequency is the number of waves per second,
Hence,
Frequency of the wave = 100 Hz
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