Neco 2017 Physics Question 18

Practice objective / multiple choice question 18 from the 2017 Neco Physics examination.

Neco 2017 Physics Objective / Multiple Choice Medium Difficulty

Question 18 NECO • 2017 • PHYSICS • objective

A string fixed at both ends has a linear mass density of \(0.025\)\,kg\,m⁻¹ and is under a tension of \(120\)\,N. When the string is forced to vibrate at a frequency of \(120\)\,Hz, a standing wave with three complete loops is observed. (i) Determine the speed of the transverse wave on the string. (ii) Find the length of the string. (iii) What is the frequency of the second harmonic of this string?

Correct Answer A. 69.3 m/s, 0.866 m, 80.0 Hz

B. 71.2 m/s, 0.900 m, 80.0 Hz

C. 69.3 m/s, 0.866 m, 85.0 Hz

D. 65.0 m/s, 0.800 m, 75.0 Hz

Correct Answer

Correct Option:

69.3 m/s, 0.866 m, 80.0 Hz

This is Neco 2017 Physics Question 18. It is one of the objective questions from the 2017 Neco Physics examination.

Difficulty level: Medium .

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