Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

Definition of thin lenses

Answer Text:
Definition of thin lenses.
A lens is conventionally defined as a piece of glass which is used to focus or change the direction of a beam of light passing through it. They are mainly
made of glass or plastic. Lens are used in making spectacles, cameras, cinema projectors, microscopes and telescopes.