Magnification

The size of the image relative to the object is given by the same formula as in the mirror case.

A negative image height refers to an inverted image. The general rule, Real images are inverted and virtual images are upright is true for both lenses and mirrors, although if there are two lenses, and the object for the second lens is the image from the first lens, this may no longer be true.


Examples     Lenses' index