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Two waves of light in air, of wavelength lambda= 600.0 nm, are initially in phase. They then both travel through a layer of plastic as shown in Figure, with L_(1)= 4.00 mu m, L_(2)= 3.50 mu m, n_(1) = 1.42, and n_(2) = 1.60. (a) What multiple of lambda gives their phase difference after they both have emerged from the layers? (b) If the waves later arrive at some common point with the same amplitude, is their interference fully constructive, fully destructive, interme- diate but closer to fully constructive, or intermediate but closer to fully destructive? |
| Answer» SOLUTION :(a) 0.700, (B) intermediate CLOSER to FULLY destructive | |