Question

Obtain an expression for lateral shift due to rectangular slab.

Answer 1

Explanation:

Take a rectangular slab in theseare 2 interfaces 1)air -glass mediam 2)glass-air mediam. When a light incident with an angle of incidence i-1,that refracted with an angle r-1 into The glass, and it incident on another interface with an angle, i-2 andemergent ray makes an angle r-2.the directionof the incident ray, is parellel to the emergent ray direction, so there is no diviation but dis placed(or) shifted. The refractive index n32 will be written as n32=n31×n12. And angle i-1=angle r-2