The plane face of a Plano convex lens of glass 3 2 having

Last updated: 6/24/2023

The plane face of a Plano convex lens of glass 3 2 having focal length 20 cm is silvered What type of mirror will it become and of what focal length f 1 Convex f 20cm 2 Concave f 20cm 3 Convex f 10cm 4 Concave f 10cm