Chapter : 5. Sound
Relation Between Wave Velocity, Frequency, and Wave Length for a Periodic Wave
or
...(1)since
equation (1) can also be written as v = ν λ ...(2)
Wave Velocity = Frequency × Wave Length
Example : 1
If 50 waves are produced in 2 seconds, what is its frequency ?
Solution. Frequency,
= 50/2 = 25 Hz
Example : 2
A source produce 50 crests and 50 troughs in 0.5 second. Find the frequency.
Solution. 1 crest and 1 trough = 1 wave
∴ 50 crests and 50 troughs = 50 waves
Now, Frequency,
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