Question

Give the expression which shows the relation between the angle of incidence and the
angle of emergence when an incident ray suffers minimum deviation in a prism? Illustrate with a ray diagram.

Answer 1

Answer:

Relation between angle of incidence and angle of emergence :

i+e=A+δ

where i= is the angle of incidence

e= is the angle of emergence

A= is Prism Angle

δ= is deviation angle

when angle of incidence is equals to angle of emergence (i=e) then prism will be in the minimum deviation position.