A ray of light passes through 4 transparent media with refractive indi – InterviewSolution

1.	A ray of light passes through 4 transparent media with refractive indices μ1, μ2, μ3 and μ4 as shown. The surface of all media are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have
Answer» A ray of light passes through $4$ transparent media with refractive indices $μ_{1}, μ_{2}, μ_{3}$ and $μ_{4}$ as shown. The surface of all media are parallel. If the emergent ray $CD$ is parallel to the incident ray $AB$ , we must have

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