The refractive index of the core of an optical fibre is 1.48 while that of the…

PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

The refractive index of the core of an optical fibre is 1.48 while that of the cladding is 1.46. Calculate the critical angle for light at the core–cladding interface. (Give your answer correct to one decimal place.)

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