Two thin slabs of refractive indicesμ2 and μ2 are placed parallel to each other in the x -

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Two thin slabs of refractive indices&#956;2 and &#956;2 are placed parallel to each other in the x - y plane. If the firection of propagation of a ray in the two media are along the unit vectors = a&#238; + b&#309; and = c&#238; + d&#309; then we have

Accepted Answer

For parallel composite slab&#956; sin &#952; = constant&#8757; ||=|| = 1&#8756; &#8756; &#956;1a = &#956;2c

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