An equilateral prism is placed on a horizontal surface. A ray PQuestion is incident onto it. For minimum deviation:
A. PQ is horizontal
B. QR is horizontal
C. RS is horizontal
D. any one will be horizontal
Answer:B
An equilateral prism is placed on a horizontal surface. A ray PQuestion is incident onto it. For minimum deviation:
A. PQ is horizontal B. QR is horizontal C. RS is horizontal D. any one will be horizontal