Question

Select One Correct Option from the following: A ray of light passes through four transparent media with refractive index $\mu_{1}$, $\mu_{2}$, $\mu_{3}$ and $\mu_{4}$ as shown in the figure. The surfaces of all media are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have
(A) $\mu_{1} =\mu_{2}$
(B) $\mu_{2} =\mu_{3}$
(C) $\mu_{3} =\mu_{4}$
(D) $\mu_{4} =\mu_{1}$.

Answer 1

c option is correct.
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Answer 2

Select One Correct Option from the following: A ray of light passes through four transparent media with refractive index $\mu_{1}$, $\mu_{2}$, $\mu_{3}$ and $\mu_{4}$ as shown in the figure. The surfaces of all media are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have

(A) $\mu_{1} =\mu_{2}$

(B) $\mu_{2} =\mu_{3}$

✔️ (C) $\mu_{3} =\mu_{4}$

(D) $\mu_{4} =\mu_{1}$.