What is a convex lens?

A convex lens is defined as a lens that is thicker in the center than at the edges. This shape allows the lens to converge, or focus, incoming parallel light rays to a point known as the focal point on the opposite side of the lens. When light rays travel through a convex lens, they bend toward the center due to refraction, which is the bending of light as it passes from one medium to another.

The ability of a convex lens to converge light makes it essential in various applications, such as in magnifying glasses, cameras, and corrective lenses for hyperopia (farsightedness). As a result, this optical property enables the formation of real images when the object is placed beyond the focal point. Thus, a convex lens is crucial in optics, providing essential functionality in the manipulation and focusing of light.