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Region I and II are separated by a spher...

Region I and II are separated by a spherical surface of radius 25 cm. An object is kept in region I at a distance of 40 cm from the surface. The distance of the image from the surface is :

A

`55.44 cm`

B

`9.52 cm`

C

`18.23 cm`

D

`37.58 cm`

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