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A source of wave produces 20 crests and ...

A source of wave produces 20 crests and 20 throughs in 0.2 s. Find the frequency of the wave.

A

100 Hz

B

200 Hz

C

300 Hz

D

400 Hz

Text Solution

Verified by Experts

The correct Answer is:
A
Since a wave consists of a crest and a through, 20 crests and 20 throughs constitude 20 waves.
As 20 waves are produced in `0.2 s`, time period of the wave, `T = (0.2 s)/(20) = 0.01 s`
Frequency of the wave, `v = (1)/(T) = (0)/(0.01) = 100 Hz`.
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