WAEC Physics 2018 Objective — Question 30
Question 30 of 50 from the West African Examinations Council (WAEC) Physics 2018 Objective paper, with the correct answer and a full explanation.
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The diagram above represents a transverse travelling wave. Which two points are 180° out of phase?
- A. A and ECorrect
- B. B and D
- C. C and F
- D. D and H
Explanation
Points separated by half a wavelength are 180° out of phase; on the diagram this corresponds to points A and E.
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