Physics-
General
Easy
Question
The figure, shows a transparent sphere of radius R and refractive index 
. An object O is placed at a distance x from the pole of the first surface so that a real image is formed at the pole of the exactly opposite surface. If x = 2R, then the value of is
- 1.5
- 2
- 3
- none of these
The correct answer is: 3
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