Refractive index of prism is $\sqrt{2}$. What should be angle of incidence for a light ray such that the emerging ray grazes out the surface. (A) $30°$ (B) $45°$ (C) $60°$ (D) $90°$
Refractive index of prism is $\sqrt{2}$. What should be angle of incidence for a light ray such that the emerging ray grazes out the surface.
(A) $30°$
(B) $45°$
(C) $60°$
(D) $90°$