WAEC Physics 2021 Objective — Question 42
Question 42 of 50 from the West African Examinations Council (WAEC) Physics 2021 Objective paper, with the correct answer and a full explanation.
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42. Which of the following statements is not a characteristic of a plane progressive wave?
- A. Energy travels out through the medium
- B. Neighbouring points along the profile possess different amplitudesCorrect
- C. Neighbouring points along the profile possess the same amplitude
- D. Neighbouring particles vibrate with different phase
Explanation
In a progressive wave, all points have the same amplitude; only the phase differs along the profile, so 'different amplitudes' is not a characteristic.
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