Two light waves of wavelength l each, reach a point having a path difference
of l / 4. At this point, the phase difference between them is
(A) pi / 4 (B) pi /2
(C) pi (D) 2pi
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Two light waves of wavelength l each, reach a point having a path difference
of l / 4. At this point, the phase difference between them is
(A) pi / 4 (B) pi /2
(C) pi (D) 2pi
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λ = I
Δx (Path difference) = I/4
As,
Δx/λ = ΔΦ(Phase difference)/2π
∴ I/4I = ΔΦ/2π
ΔΦ = π/2
Ans - B
Answer:
(B) pi/2
Explanation: