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Question

Physics Question on Refraction of Light

The critical angle for total internal reflection in diamond is 24.524.5^{\circ} . The refractive index of the diamond is

A

2.45

B

1.41

C

2.59

D

1.59

Answer

2.45

Explanation

Solution

Given, critical angle C=24.5C=24.5^{\circ}
For total internal reflection
μ=1sinC=1sin24.5μ\mu=\frac{1}{\sin C} =\frac{1}{\sin 24.5^{\circ}} \mu
=2.45[sin24.5=0.414]=2.45 \left[\sin 24.5^{\circ}=0.414\right]