What is the relationship between the focal length of a convex lens and its ability to converge light rays?

The focal length of a convex lens is directly related to its ability to converge light rays. A shorter focal length means the lens can converge light rays more strongly, bringing them to a focus at a closer distance from the lens. Conversely, a longer focal length results in weaker convergence of light rays, causing them to focus at a greater distance from the lens.