One of the refracting surfaces of a prism of angle 30 0 is silvered. A ray of light incident at an angle of 60° retraces its path . The refractive index of the material of the prism is -
A
B
C
3/2
D
2
Text Solution
Verified by ExpertsThe correct answer is:
B
1 sin 60 0 = μ sin 30 0
∴ μ = 
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