What is the frquency of vibration if the balance wheel of a wrist watch makes 90 revolutions in 25s?

By: |Published on: Nov 10|Categories: Physics JAMB| 0 comments

A. 0.01 Hz
B. 0.04 Hz
C. 2.27 Hz
D. 3.60 Hz

Correct Answer:

Option D – 3.60 Hz

Explanation

Frequency = (No. of revolutions)/ Time = (90)/25 = 3.6 Hz

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