Question

When a convex lens dipped in liquid whose refractive index is less than the refractive index of lens then focal length of lens will be

Answer 1

Answer:

Focal length will be greater

Explanation:

From the Lens maker's equation, it is seen that focal length is inversely proportional to refractive index. So as the Lens is dipped in water, as the refractive index decreases, focal length increases.