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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > An optical fibre consists of core of mu1 surrounded by a cladding of mu2< mu1. A beam of light enters from air at an angle alpha with axis of fibre. The highest alpha for which ray can be travelled through fibre is

An optical fibre consists of core of mu1 surrounded by a cladding of mu2< mu1. A beam of light enters from air at an angle alpha with axis of fibre. The highest alpha for which ray can be travelled through fibre is

A ray of light travels from an optically denser to rarer medium. The critical angle for the two media is C. the maximum possible deviation of the way will be