Under constant tension and constant mass per unit length, the note produced by a plucked...

JAMB 1997

Under constant tension and constant mass per unit length, the note produced by a plucked string is 500Hz when the length of the string is 0.90m. At what length is the frequency 150Hz?

A. 3m
B. 4m
C. 5m
D. 6m

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Correct Answer: Option A

Explanation

F = \(\frac{1}{2L}\)\(\sqrt\frac{T}{m}\)

F₁L₁ = F₂L₂

500 x 0.9 = 150 x L₂

therefore, L₂ = 3m

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Under constant tension and constant mass per unit length, the note produced by a plucked...

Correct Answer: Option A

Explanation

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