WAEC Physics 2020 Objective — Question 12

Question 12 of 50 from the West African Examinations Council (WAEC) Physics 2020 Objective paper, with the correct answer and a full explanation.

The diagram above illustrates a

A. Amplitude of vibration, force constant of string and length of string
B. Amplitude of vibration, force constant of string and tension in string
C. Mass per unit length of string, tension in string and length of stringCorrect
D. Force constant of string, tension and length of string

Explanation

The velocity v of a wave in a stretched string depends on the tension T in the string and the mass per unit length (mu) of the string, obtained using the method of dimensions.

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