The mirror formula for curved mirrors is:
[tex] \frac{1}{f}= \frac{1}{d_o}+ \frac{1}{d_i} [/tex]
where
f is the focal length of the mirror
[tex]d_o[/tex] is the distance of the object from the mirror
[tex]d_i[/tex] is the distance of the image from the mirror
The sign convention that should be used in order to find the correct values is the following:
- [tex]f[/tex]: positive if the mirror is concave, negative if the mirror is convex
- [tex]d_i[/tex]: positive if the image is real (located on the same side of the object), negative if it is virtual (located on the opposite side of the mirror)
