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A glass rod has ends as shown in figure....

A glass rod has ends as shown in figure. The refractive index of glass is `mu`. The object O is at a distance `2R` from the surface of larger radius of curvature. The distance between apexes of ends is `3R.` Find the distance of image formed of the point object from right hand vertex. What is the condition to be satisfied if the image is to be real?

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