Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Consider the situation shown in figure. The point 
is the centre and the light ray forms an angle of 
with the normal.
The normal makes an angle 
with the horizontal and the mirror makes an angle 
with the normal. The value of refractive index of that spherical portion so that light ray retraces its path is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Refractive index, 
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