JAMB Physics 2020 Objective — Question 32
Question 32 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2020 Objective paper, with the correct answer and a full explanation.
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32. The following frequencies are overtones of 140Hz except
- A. A. 760HzCorrect
- B. B. 420Hz
- C. C. 560Hz
- D. D. 840Hz
Explanation
Overtones of 140Hz are whole-number multiples: 280, 420, 560, 700, 840Hz etc. 760Hz is not a whole-number multiple of 140Hz (760/140 = 5 remainder 60), so it is not an overtone of 140Hz.
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