Two waves of light in air, of wavelength (lambda) ? = 580.0 nm are initially in
ID: 1502589 • Letter: T
Question
Two waves of light in air, of wavelength (lambda) ? = 580.0 nm are initially in phase. They then both travel through a layer of plastic, as shown in the figure, with L1 = 5.25 ?m, L2 = 3.40 ?m, n1 = 1.36 and n2 = 1.59. What multiple of (lambda) ? gives their phase difference after they both have emerged from the layers?
Two waves of light in air, of wa elength = 580.0 nm are initially in phase. They then both travel through a layer of plastic, as shown in the figure, with L1 = 5.25 m, L2 = 3.40 m n1 = 1.36 and n2 = 1.59 what multiple of gives their phase difference after they both have emerged from the layers? Submit Answer Tries 0/10 If the waves later arrive at some common point, what type of interference do they undergo? What value would give fully destructive? Incorrect 3/4 Incorrect 1 Correct: 112 Incorrect 1/3 Incorrect 114 You are correct. Your receipt no. is 165-1940 What value would give fully constructive? Incorrect 114 Incorrect 113 Correct: 1 Incorrect 3/4 Incorrect 1/2 You are correct. Your receipt no. is 165-740 PreviousTies Is this situation closer to constructive or destructive? Correct: constructive Incorrect destructiveExplanation / Answer
in general N = nL/lambda
N2 = n2L2/lambda+(l2-l1)1/lambda = 3.4*10^-6*1.59/0.58*10^-6+1.85*10^-6/0.58*10^-6 = 12.5
N1 = l1n1/lambda = 5.25*10^-6*1.36/0.58*10^-6 = 12.3
N2-N1 = 0.2
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