### LINEAR MAGNIFICATION OF A LENS

It is the ratio of the image height to object height. According to new Cartesian sign convention

### LENSES

A lens is made of a transparent material bounded by two spherical surfaces. The surfaces may be both convex, both concave or one convex and one concave etc. For a thin lens, the thickness of the lens is small compared to other dimensions like object distance. Two basic types are: (1) Convex lens – thicker […]