A lens that thicker at the edge than at the center is

Question

Quizplus · Accepted Answer

A lens that is thicker at the edge than at the center is a concave or diverging lens only. This is because such lenses are designed to diverge or spread out incoming light, which causes the lens to be thinner in the center and thicker at the edges. In contrast, a convex or converging lens is thicker in the center and thinner at the edges, since it bends incoming light rays towards a central focal point. Therefore, choices B, C, and D are all incorrect.

A Lens That Thicker at the Edge Than at the Center