If two sound waves have a phase difference of 60o, then they will have a path difference of:
Correct answer: A. λ/6
- A. λ/6
- B. λ/3
- C. λ
- D. 3λ
Explanation
Phase Δφ = 60° = π/3 rad. Path difference Δx = (λ/2π)Δφ = λ(π/3)/(2π) = λ/6.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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