Which of the following describes a convex lens?

A convex lens is characterized by being thicker in the center than at the edges, which is the defining feature that differentiates it from other types of lenses, such as concave lenses. This shape causes parallel light rays that enter the lens to converge towards a single point known as the focal point.

When light passes through a convex lens, it does not diverge but rather is refracted inwards, allowing it to focus to a point on the other side of the lens. This property is commonly utilized in various optical devices, such as magnifying glasses, cameras, and eyeglasses for farsightedness.

The other options describe behaviors that are not associated with convex lenses. For instance, a lens that diverges light rays would relate to concave lenses, while scattering and absorption of light are characteristics not inherent to the primary function of a convex lens.