Observe the figures carefully and then answer. What is the nature of lens A and B?

Lens A is identified as a convex lens, the light rays after passing through the lens are converging. This lens is thicker at middle and thinner at edge. Lens B is identified as a concave lens, the light rays after passing through the lens are diverging. This lens is thinner at middle and thicker at edge.

Observe the figures carefully and then answer. Give one use of each lens A and B.

Lens A is identified as a convex lens, the light rays after passing through the lens are converging. Uses of convex lens: It is used as a magnifying glass. They are used as a reading glass to read very small font print of a book. Lens B is identified as a concave lens, the light rays after passing through the lens are diverging. Uses of concave lens: They are used in making spectacles for those who cannot see distant objects clearly.