74. A wave source produces 20 crests and 20 through in 0.2 second. The frequency of the
wave is:
Answers
Answered by
1
Answer:
100Hz
Explanation:
In 0.2 seconds, it complete 20 waves.In 1 second , it will complete 20 * 5 = 100 crests. So Frequency is 100 Hz.
Answered by
17
Explanation:
A crest and a trough makes a complete wave
frequency of a wave = no. of waves produced
...................................................
time taken
f = 20/0.5
f = 100 Hz
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