The refractive index of the core of an optical fibre is mu_2and that of the cladding is mu_1 . The angle of incidence on the face of the core so that the light ray just under goes total internal reflection at the cladding is

The refractive index of the core of an optical fibre is mu_2and that o

1.	The refractive index of the core of an optical fibre is mu_2and that of the cladding is mu_1 . The angle of incidence on the face of the core so that the light ray just under goes total internal reflection at the cladding is
Answer» `SIN^(-1) (mu_1/mu_2)` `sin^(-1) SQRT(mu_2^2 - mu_1^2)` `sin^(-1) sqrt(mu_2 -mu_1)` `sin^(-1) sqrt(mu_1^2 +mu_2^2)` ANSWER :D

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The refractive index of the core of an optical fibre is mu_2and that of the cladding is mu_1 . The angle of incidence on the face of the core so that the light ray just under goes total internal reflection at the cladding is

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