A sound wave has a wavelength of λ. What is the minimum possible distance between two points with a phase difference of 90˚?
Correct answer: D. λ/4
- A. λ/2
- B. 3λ/2
- C. 5λ/2
- D. λ/4
Explanation
Path difference = wavelength/2π x phase differenceΔx = λ/2π × π/2 = λ/4 hence Option D is the correct answer.
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