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In the figure, a light ray is incident at angle 01 = 53° on a series of five transparent layers with parallel boundaries. For layers 1 and 3, L1
= 29 um, L3 = 39 µm, n1 = 1.7, and ng = 1.60. (a) At what angle does the light emerge back into air at the right? (b) How much time does
the light take to travel through layer 3?
Air
ng
Air
(a) Number
53
Units
* (degrees)
(b) Number
i
24016
Units
ns

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