11. A ray of light of wavelength, = 600 nm, propagates through three distinct media of indices of refraction: n = 2,112

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11 A Ray Of Light Of Wavelength 600 Nm Propagates Through Three Distinct Media Of Indices Of Refraction N 2 112 1 (20.29 KiB) Viewed 22 times

11. A ray of light of wavelength, = 600 nm, propagates through three distinct media of indices of refraction: n = 2,112 = 1.5,n3 = 1.65. What minimum thickness, L. of the middle medium in the figure will diminish transmission through the whole slab? Hint: Compare the phases of the beam traversing L directly with one that reflects backwards off the 2-3 boundary then reflects forwards off the 1-2 boundary (ie, travels 3L through medium 2). (a) 300 m (b) 50 nm (c) 200 nm (d) 100 nm (e) 600 nm 3