Question

Give a relation between angle of incidence, angle of deviation and the refracting angle of a prism. When is

the deviation minimum​

Answer 1

Explanation:

The angle through which the emergent ray deviates from the direction of incident ray is called angle of deviation 'd'. As the angle of incidence is increased, angle of deviation 'd' decreases and reaches minimum value. If the angle of incidence is further increased, the angle of deviation is increased.

Answer 2

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.