convex; makes parallel light rays passing through it bend inward and meet (converge) at a spot just beyond the lens known as the focal point.
A convex lens is also called converging lens because all light rays incidented on the lens and parallel to the principal axis converges at the focus at the other side after refraction.
A lens is a transparent medium where all light rays incident and passing through it converges after refraction. They converge at a point known as the principal focus or the focal point. No matter the number of rays incident on the lens (i.e striking the lens) they all CONVERGES at the FOCAL POINT.
An image formed when the light rays converge at a particular point after refraction and reflection is known as a real image. An image formed when rays appear to meet a particular point after the reflection from the mirror is known as a virtual image. hopes this helps.