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A ray of light passes through four trans...

A ray of light passes through four transparent media with refractive indices `mu_(1),mu_(2),mu_(3), and mu_(4)` as shown in figure. The surfaces of all media are paralle. If the emerent ray CD is parallel to the incident ray AB, we must have

A

`m_(1)=m_(2)`

B

`m_(2) = m_(3)`

C

`m_(3)=m_(4)`

D

`m_(4)=m_(1)`

Text Solution

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The correct Answer is:
C
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