Q. Under minimum deviation condition in a prism, if a ray is incident at an angle $30{^\circ}$, the angle between the emergent ray and the second refracting surface of the prism is
A) $0{^\circ}$
B) $30{^\circ}$
C) $45{^\circ}$
D) $60{^\circ}$
Explanation
(d) In minimum deviation $i = e = 30{^\circ},$ so angle between emergent ray and second refracting surface is $90{^\circ} - 30 = 60{^\circ}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.