Convex lens is a Converging lens || Concave lens is a diverging lens || DARSHAN CLASSES - YouTube
Converging lens | optics | Britannica
Converging and diverging lenses – GeoGebra
IMP Concave vs Convex and (Reflective) Mirror vs (Refractive) Lens | Mirrors and lenses, Physics concepts, Physics and mathematics
Converging and Diverging Lens: If one's eyeball is too long or too wide, the light rays… | Mirrors and lenses, Science lessons elementary, Physical science lessons