A prism of angle A and refractive index 2 is surrounded by medium of refractive index `
Channel: Doubtnut
Date: 2021-11-02

A prism of angle A and refractive index 2 is surrounded by medium of refractive index `sqrt3` . A ray is incident on side PQ at an angle of incidence `i (0leile90^(@))` as shown in the figure-. The refracted ray is then incident on side PR of prism. The minimum angle A of prism for which ray incident on side PQ does not emerge out of prism from side PR (for any value of i) is: