Question 169: Ray Optics

Question

A monochromatic light is incident at a certain angle on an equilateral triangular prism and suffers minimum deviation. If the refractive index of the material of the prism is $$\sqrt 3 $$, then the angle of incidence is:

Accepted Answer

i = e
r
1
= r
2
= $${A \over 2}$$ = 30
o
by Snell's law
1 $$ 	imes $$ sin i = $$\sqrt 3  	imes {1 \over 2} = {{\sqrt 3 } \over 2}$$
i = 60

Answer

60
o

Answer

45
o

Answer

90
o

Answer

30
o

Ray Optics

A monochromatic light is incident at a certain angle on an equilateral triangular prism and suffers minimum deviation. If the refractive index of the material of the prism is $\sqrt 3 $, then the angle of incidence is:

Choose the correct answer: