A source produces 25 crests and 25 troughs in 0.2 seconds then the frequency of the wave is
a. 250 HZ
b. 300 HZ
c. 200 HZ
d.125 HZ
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A source produces 25 crests and 25 troughs in 0.2 seconds then the frequency of the wave is
a. 250 HZ
b. 300 HZ
c. 200 HZ
d.125 HZ
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Given:
Time taken = 0.2 seconds
Number of crests produced = 25
Number of troughs produced = 25
To Find:
The frequency of the wave .
Solution :
One wave is formed by one crest and one trough .
The number of waves = 25 (25 crest + 25 trough)
Now ,
Frequency of a wave , ν = Number of waves / Total time taken
=> ν = 25 / 0.2
=> ν = 125 Hz
The frequency of the given wave is 125 Hz .