Question

The figure shows refraction and emergence of a ray of light incident on a rectangular glass slab. Copy the diagram and mark the lateral displacement of the incident ray. Name the two factors on which the lateral displacement depends.

Answer 1

The lateral displacement depends on 

1. The angle of incidence of the incident ray PQ, on the slab and 

2. The thickness of the glass slab. The perpendicular distance between the emergent forward.