Determine the value of the angle of incidence for a ray of light travelling from a medium of
Channel: Doubtnut
Date: 2020-08-02

Determine the value of the angle of incidence for a ray of light travelling from a medium of refractive index `mu_1 = sqrt(2)` into the  medium of refractive index `mu_2 = 1`, so that it just grazes along the surface of separation.