Mathematics, 06.04.2020 04:28 htx88

Light in an optical fiber approaches the glass-air boundary at a 60-degree angle so that it is totally internally reflected. At what angle does the light reflect back into the optical fiber? The refractive index of the optical fiber is 1.45. Give your answer as a whole number to the nearest degree.

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Light in an optical fiber approaches the glass-air boundary at a 60-degree angle so that it is total...