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In a long glass tube, mixture of two liquids A and B with refractive indices 1.3 and 1.4 respectively, forms a convex refractive meniscus towards A. If an object placed at 13 cm from the vertex of the meniscus in A forms an image with a magnification of ‘–2’ then the radius of curvature of meniscus is :
1)1 cm. 2)1/3 cm. 3)2/3 cm. 4)4/3 cm
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