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A convex spherical refracting surface wi...

A convex spherical refracting surface with radius R separates a medium having refractive index `5//2` from air. As an object is moved towards the surface from far away from the surface along the principle axis, its image

A

Changes from real to virtual when it is at a distance R from the surface

B

Changes from virtual to real when it is at a distance R from the surface

C

Changes from real to virtual when it is at a distance 2R/3 from the surface

D

Changes from virtual toreal when it is at a distance 2R/3 from the surface

Text Solution

Verified by Experts

The correct Answer is:
C
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