Under what condition, is a convex lens nearly acts as diverging lens?

Under what condition, is a convex lens nearly acts as diverging lens? Answer: Condition 1: A convex lens can behave as a diverging lens when it is placed in a medium whose refractive index is greater than the refractive index of the material of the lens.  Example: A convex lens of glass (n= 1.5) behave … Read more