# What is U and V in mirror formula?

Posted by NNency - Feb 13, 2020
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**Feb 13, 2020**

Suppose an object is placed u cm in front of a spherical mirror of focal length f such that the image is formed v cm from the mirror, then u, v and f are related by the equation ; 1/f= 1/u + 1/v. This equation is referred to as the mirror formula. The formula holds for both concave and convex mirrors.