Neco 2022 Physics Question 45

Practice objective / multiple choice question 45 from the 2022 Neco Physics examination.

Neco 2022 Physics Objective / Multiple Choice Medium Difficulty
Question 45 NECO • 2022 • PHYSICS • objective

A stretched string fixed at both ends has a linear mass density \(\mu = 0.010\ \text{kg m}^{-1}\). When the tension in the string is \(T\) newtons, the fundamental frequency is 100 Hz. When the tension is increased by 25 N, the frequency of the third harmonic becomes 330 Hz. Determine (i) the original tension \(T\) and (ii) the length \(L\) of the string.

Answer Options

A. T \\approx 1.30\\times10^{2}\\ \\text{N} (≈130 N); L \\approx 0.50\\ \\text{m}
Correct Answer B. T \approx 1.19\times10^{2}\ \text{N} (≈119 N); L \approx 0.55\ \text{m}
C. T \\approx 1.05\\times10^{2}\\ \\text{N} (≈105 N); L \\approx 0.60\\ \\text{m}
D. T \\approx 9.5\\times10^{1}\\ \\text{N} (≈95 N); L \\approx 0.65\\ \\text{m}
Correct Answer
B
Correct Option:
T \approx 1.19\times10^{2}\ \text{N} (≈119 N); L \approx 0.55\ \text{m}

About This Question

This is Neco 2022 Physics Question 45. It is one of the objective questions from the 2022 Neco Physics examination.

Difficulty level: Medium .

View More Neco 2022 Physics Questions More Neco Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support