a object placed at 4cm distance from the surface of transparent sphere made of material of refractive index 2.5 and the real image of the object is formed at the same distance from the second surface of the sphere find the diameter of the sphere?
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a object placed at 4cm distance from the surface of transparent sphere made of material of refractive index 2.5 and the real image of the object is formed at the same distance from
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