Basic Maths and Units and DimensionsMedium
Question
A ray of light passes through four transparent media with refactive indices μ1, μ2, μ3 and μ4 as shown in the figure. The surface of the all media are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have
Options
A.μ1 = μ2
B.μ2 = μ3
C.μ3 = μ4
D.μ4 = μ1
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