Question

Under minimum deviation condition in a prism if a ray is incident at angle 30 degree angle between the emergent ray and secondary refractive surface of the prism is

Answer 1

In the case of minimum deviation 2i=A+δ.

And in the minimum deviation in a regular prism (angle of prism is 60 Degree) the angle of emergence is 30 degrees  and the angle between the refracting surface  and the emergent ray will be 150 degrees

Answer 2

Answer:

In minimum deviation i=e=30∘, so angle between emergent ray and second refracting surface is 90∘−30∘=60∘