Two converging lenses, two jobs
Two converging lenses, two jobs

An astronomical telescope uses two converging lenses. The large objective lens at the front has a long focal length fof_{o}fo​ and receives almost parallel rays from a distant object.
Two converging lenses, two jobs
Two converging lenses, two jobs

An astronomical telescope uses two converging lenses. The large objective lens at the front has a long focal length fof_{o}fo​ and receives almost parallel rays from a distant object.