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A spherical surface of radius of curvatu...

A spherical surface of radius of curvature R separates air (refractive index 1.0) from glass (refractive index 1.5). The centre of curvature is in the glass. A point object P placed in air is found to have a real image Q in the glass. The line PQ cuts the surface at a point O, and `PO=OQ`. The distance `PO`

A

`5R`

B

`3R`

C

`2R`

D

`1.5R`

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The correct Answer is:
A
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