Neco 2019 Physics Question 7

Practice objective / multiple choice question 7 from the 2019 Neco Physics examination.

Neco 2019 Physics Objective / Multiple Choice Medium Difficulty

Question 7 NECO • 2019 • PHYSICS • objective

A string 1.50 m long is fixed at both ends. Its fundamental frequency is 100 Hz. When the tension in the string is increased by 20 N, the frequency of the third harmonic becomes 450 Hz. Determine (a) the original tension \(T\) (in newtons) and (b) the linear mass density \(\mu\) (in kg m\(^{-1}\)).

Correct Answer A. 16 N; 1.78×10^{-4} kg/m

B. 12 N; 1.50×10^{-4} kg\/m

C. 14 N; 2.10×10^{-4} kg\/m

D. 20 N; 2.00×10^{-4} kg\/m

Correct Answer

Correct Option:

16 N; 1.78×10^{-4} kg/m

This is Neco 2019 Physics Question 7. It is one of the objective questions from the 2019 Neco Physics examination.

Difficulty level: Medium .

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