Published by:
CGP EDU Academic Team
Published on: August 22, 2026
A spherical surface of radius of curvature 
, separates air from glass (refractive index 
). The centre of curvature is in the glass medium. A point object ' O ' placed in air on the optic axis of the surface, so that its real image is formed at ' I ' inside glass. The line OI intersects the spherical surface at 
and 
. The distance 
equals to-
A
5 R
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
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