Two transparent media of refractive indices $\mu_1$ and $\mu_3$ have a solid lens shaped transparent…
Two transparent media of refractive indices $\mu_1$ and $\mu_3$ have a solid lens shaped transparent material of refractive index $\mu_2$ between them as shown in figures in Column II. A ray traversing these media is also shown in the figures. In Column I different relationships between $\mu_1, \mu_2$ and $\mu_3$ are given. Match them to the ray diagram shown in Column II.
(A) P,R, (B) Q,S,T, (C) P,R,T, (D) Q,S
(A) P, (B) Q,S, (C) P,R,T, (D) Q,R,S
(A) P,R, (B) Q,S, (C) P,T, (D) Q,R,S
(A) P, (B) Q,S,T, (C) P,T, (D) Q,S
Solution
(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, $S$
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