Can a convex (converging) lens behave as concave (diverging) lens in some situations? Give example?

How can a convex lens behavae like a diverging lens?

Can a convergent lens in one medium behave as a divergent lens in some other medium?

Under what conditions a concave lens can behave as a converging lens?

What is divergent evolution ? Give example.

A convex lens becomes less converging when placed in

A lens behaves as a converging lens in air and diverging lens in water.The refractive index of the material of the lens is

Why does a convex lens of glass mu=1.5 behave as a diverging lens when immersed in carbon disulphide of higher refractive index mu=1.65 ?

A biconvex lens of a transparent material of refractive index 1.25 is immersed in water of refractive index 1.33 will the lens behave as a converging or a diverging lens?Give reason.

Under what conditions will a convex lens have a negative and a concave lens a positive power?