Two waves meet with a path difference of a quarter of a wavelength. What is the phase difference?
Answer and explanation
Correct answer: D. pi/2 radians
- Step 1: Phase difference . Step 2. . Answer: pi/2 radians. Why not the others: pi radians corresponds to half a wavelength; pi/4 corresponds to an eighth of a wavelength; 2 pi corresponds to a whole wavelength.
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