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JAMB Physics 2004 Question 37

Question 37

Waves

The phase difference between waves P and Q in the diagram above is

Diagram for this question
  1. A.π/2
  2. B.2π
  3. C.π/4
  4. D.π
Show the answer and explanation

Answer: C (π/4)

Explanation

Q's crests lag P's by about one-eighth of a wavelength; one full wavelength is 2π, so the phase difference is 2π/8 = π/4.