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

PHYSICS

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

Correct Answer: A. 3m

Explanation

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

F₁L₁ = F₂L₂

500 x 0.9 = 150 x L₂

therefore, L₂ = 3m

Previous Next

Back to JAMB 1997 Questions

Post an Explanation Or Report an Error

If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *