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Question
The time taken for 10 oscillations is 1 s. The frequency of the wave is:
Options:
A .  10 Hz
B .  110 Hz
C .  20 Hz
D .  120 Hz
Answer: Option A
:
A
Here, total number of oscillations = 10
Total time taken = 1s
Hence, time taken for 1 oscillation = 110 s
Thetime required to complete one oscillation is known as time period (T).
Now, frequency, f=1T = 10 Hz

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