The angle of incidence for a ray light at a refracting surface of a prism is 45°. The angle of prism is 60°. If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are:
45°;
30°;
45°;
30°;
As we learnt in
Condition of maximum deviation -
- wherein
i =45
A=60
for minimum deviation
=
=
Option 1)
45°;
Incorrect option
Option 2)
30°;
Correct option
Option 3)
45°;
Incorrect option
Option 4)
30°;
Incorrect option