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A thin concavo-convex lens has focal length +60 cm. The radius of curvature of concave surface is double that of convex. The radii of curvature of two surfaces, if refractive index of material of lens is 1.4, are

Answer» A thin concavo-convex lens has focal length +60 cm. The radius of curvature of concave surface is double that of convex. The radii of curvature of two surfaces, if refractive index of material of lens is 1.4, are


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