State the relation between object distance, image distance and focal length of a spherical mirror (concave mirror or convex mirror).

The relation between the object distance $(u)$, the image distance $(v)$ and the focal length $(f)$ of a spherical mirror (a concave or convex mirror) is:

$\frac{1}{image\ distance}+\frac{1}{object\ distance}=\frac{1}{focal\ length}$

Or,

$\frac{1}{v}+\frac{1}{u}=\frac{1}{f}$

Here, $v$ = distance of image from mirror

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Updated on: 10-Oct-2022

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