2 A convex lens of radii of curvature 20 cm and 30 cm respectively It is silvered at the surface which has smaller radius of

Question

2 A convex lens of radii of curvature 20 cm and 30 cm respectively It is silvered at the surface which has smaller radius of curvature Then it will behave as 14 1 5 a concave mirror with equivalent focal length 30 11 b concave mirror with equivalent focal length 60 cm cm 11 c convex mirror with equivalent focal length 30 cm 11 d convex mirror with equivalent focal length 60 11 cm 68 Th an 3 of a c 69 Fa de an 2 70 A of the a

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