A equi-convex lens of refractive index mu2 and focal length f (in air) is kept in medium of refractive index mu 1. A equi-convex lens of refractive index mu2 and focal length f (in air) is kept in medium of refractive index mu 1. October 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]