Two transparent media of refractive indices μ_1 and μ_3 have a...

(A) $\rightarrow$ since $\mu_1 < \mu_2$, the ray of light will bend towards normal after first refraction. (B) $\rightarrow \mu_1>\mu_2$, the ray of light will bend away from the normal after first refraction. (C) $\rightarrow$ since $\mu_2=\mu_3$ means in second refraction there will be no change in the path of ray of light. (D) $\rightarrow$ Since $\mu_2>\mu_3$, ray of light will bend away from the normal after second refraction. Therefore the correct options are as under. (A) $\rightarrow$ P, R (B) $\rightarrow$ Q, S, T (C) $\rightarrow$ P, R, T (D) $\rightarrow$ Q, $S$