The angle of incidence of a ray of light entering a `60^(@)` prism is `42^(@)`. If ray is just total
Channel: Doubtnut
Date: 2021-11-02

The angle of incidence of a ray of light entering a `60^(@)` prism is `42^(@)`. If ray is just totally reflected at the second face of the prism, determine the refractive index of the prism material for the light.