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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.
In previous problem, if the refractive index of the sphere is varied, then the position x of the object and its image from the respective poles will also vary. Identify the correct statement.
- If the value of m increases the value of x decreases
- If the value of m becomes equal to unity, then x tends to infinity
- The value of m must not be less than 1
- All the above
The correct answer is: All the above
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