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Two thin slabs of refractive indices mu(...

Two thin slabs of refractive indices `mu_(1)` and `mu_(2)` are placed parallel to each other in the x-z plane. If the direction of propagation of a ray in the two media are along the vectors `vec(r)_(1) = a hati +b hatj` and `vec(r)_(2) = c hati +d hatj` then we have:

A

`mu_(1)a=mu_(2)b`

B

`(mu_(1)a)/sqrt(a^(2)+b^(2))=(mu_(2)d)/sqrt(c^(2)+d^(2))`

C

`mu_(1)(a^(2)+b^(2))=mu_(2)(c^(2)+d^(2))`

D

none of these

Text Solution

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The correct Answer is:
B
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