Write the Gaussian equation for a lens.

(N/A) The Gaussian lens equation,also known as the lens formula,relates the object distance $(u)$,the image distance $(v)$,and the focal length $(f)$ of a lens. It is given by the expression:
$\frac{1}{v} - \frac{1}{u} = \frac{1}{f}$
Where:
$v$ is the distance of the image from the optical center of the lens.
$u$ is the distance of the object from the optical center of the lens.
$f$ is the focal length of the lens.