A convex lens made of air (enclosed by a very thin rigid material) and used below the surface of the water will result in a
A) converging lens.
B) diverging lens.
C) lens of infinite focal distance.

Question

Quizplus · Accepted Answer

A convex lens made of air, when used underwater, behaves as a diverging lens because the refractive index of water is higher than that of air, reversing the usual behavior of a convex lens in air.

A Convex Lens Made of Air (Enclosed by a Very