Question

A source of wave produces 40 crests and 40 troughs in 0.4 s. What is the frequency of the wave?

March 28, 2024

Answer

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,

f = $40\over 0.4$ = 100 Hz

Hence,

Frequency of the wave = 100 Hz

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