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0. As shown in figure, a liquid of refractive index n2 is poured onto the concave surface of concavo-convex lens. R1 and R2 are the radii of curvature of convex and concave surfaces of the lens respectively and R1 = 2R2· The refractive index of material of lens is n1. For which combination of n1 and n2, the whole system behaves as a diverging lens (NTSE Andhra Pradesh, Stage-I, 2014-15)
n1 = 1.2 and n2 = 1.8
n1 = 1.63 and n2 = 1.35
n1 = 1.56 and n2 = 1.33
n1 = 1.7 and n2 = 1.33
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