Question on: JAMB Physics - 2024
A sonometer's fundamental note is 50 Hz. What is the new frequency when the tension is four times the original?
A
25 Hz
B
100 Hz
C
200 Hz
D
250 Hz
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Correct Option: B
The frequency (f) of a sonometer is proportional to the square root of the tension (T): f ∝ √T. If tension increases four times (4T):
f' ∝ √(4T) = 2√T
Original frequency f = 50 Hz, so f' = 2 x 50 Hz = 100 Hz.
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