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An optical fiber consists of an outer "cladding" layer and an inner core with a slightly higher index of refraction. light rays entering the core are trapped inside by total internal reflection and forced to travel along the fiber (see the following figure). suppose the cladding has an index of refraction of 1.46 and the core has an index of refraction of 1.48.calculate the largest angle between a light ray and the longitudinal axis of the fiber for which the ray will be totally internally reflected at the core/cladding boundary.
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