Which is a characteristic of a convex lens?

• A. It diverges light
• B. It converges light
• C. It reflects light
• D. It absorbs light

Answer: (B)

A convex lens is designed to converge light rays that pass through it. The lens is thicker in the middle than at the edges, which allows it to bend incoming parallel rays of light towards a focal point on the opposite side of the lens. This property is used in various optical devices, such as magnifying glasses, cameras, and projectors, where focusing light is essential for creating clear images.

In contrast, a lens that diverges light would typically be a concave lens, which spreads out light rays instead of converging them. Reflection and absorption don't accurately describe the primary function of a convex lens; these characteristics relate more to mirrors or materials that do not transmit light effectively. Hence, the ability of a convex lens to converge light is vital in understanding its application in optics.