Reflection Of Light

Image Formation by a Convex Mirror
- A convex mirror always forms a virtual, erect, and diminished image behind the mirror.
- The image is always located between the pole and focus of the mirror.


Derivation of the Mirror Equation
Using the sign convention:
- The mirror formula is given by: where:
- = Focal length of the mirror
- = Object distance
- = Image distance
For a convex mirror, and are positive, while is negative. Thus, the mirror equation holds for both concave and convex mirrors.