Question

a ray of light, incident obliquely on a face of a rectangular glass slab placed in air, emerges from the opposite face parallel to the incident ray. State two factors on which the lateral displacement of the emergent ray depends.

Answer 1

it depends on angle of incident
and it also depends on thickness of the material
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Answer 2

the three factors on which the lateral displacement of the emergent ray depends are

1.the thickness of block-the more the thickness of the medium the more is lateral displacement

2.the angle of incidence-more the angle of incidence more is the lateral displacement

3.the refractive index of the glass slab-more the refractive index of the medium more is lateral displacement