A ray of light is incident at angle of 60 o on one face of a prism which has an apex angle of 30 o . The ray emerging out of the prism makes an angle of 30 o with the incident ray. The refractive index of the material of the prism is -
A
B
C
1.5
D
1.6
Text Solution
Verified by ExpertsThe correct answer is:
B
i = 60º, A = 30º and δ = 30º
δ = i + e – A
e = 0
Also, r 2 = 0 ⇒ r 1 = 30º
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