Question

when a convex lens changes its
behaviour as per the medium it kept and how ?​

Answer 1

Answer:

The ability of a lens to act as converging or diverging depends upon its refractive index. ... Generally the lens is in air so n gives refractive index of material of lens with respect to air. If you place the convex lens in a medium other than air, then due to change in n, the focal length f of lens changes

"Hope its help you"

Answer 2

Answer:

Here R1 and R2 are kept acc to sign conventions. The lens will have a change in its power of converging ifit is kept in a medium whose refractive index is greater than that of it. if the refractive index is greater it will start behaving as a diverging lens...

Explanation:

mark me as brainlist

and please give me some extra point to get next rank