Question on: JAMB Physics - 2008
What is the frquency of vibration if the balance wheel of a wrist watch makes 90 revolutions in 25 s?
A
0.01 Hz
B
0.04 Hz
C
2.27 Hz
D
3.60 Hz
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Correct Option: D
Frequency = (No. of revolutions)/ Time = (90)/25 = 3.6 Hz
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