WAEC Physics 2023 Objective — Question 39
Question 39 of 50 from the West African Examinations Council (WAEC) Physics 2023 Objective paper, with the correct answer and a full explanation.
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Determine the wavelength of the waves shown in the diagram (using the diagram to answer questions 39 and 40).
- A. 0.25 m
- B. 0.50 mCorrect
- C. 0.75 m
- D. 1.00 m
Explanation
From the diagram, l=n(λ/2)=5(λ/2); given l=125cm and n=5 loops, λ=2l/5=2(125)/5=50cm=0.5m.
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