Question

Write mirror formula and explain the terms involved.

Answer 1

MIRROR FORMULA


       A mirror formula may be defined as the formula which gives the relationship between the distance of image v, distance of object u, and the focal length of a mirror. It may be written as,



    where,   v = Distance of image from pole of mirror
                 u = Distance of object from pole of mirror
    and,       f = Focal length of the mirror

       The mirror formula is applicable both in spherical mirrors (concave mirrors and convex mirrors) and in plane mirrors.

Answer 2

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

Explanation:

Mirror equation is an equation relating object distance and image distance with focal length. It is also known as mirror formula.

spherical mirror:

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

1. The distance between the object and the pole of the mirror is called Object distance(u).
2. The distance between the image and the pole of the mirror is called Image distance(v).
3. The distance between the Principal focus and the pole of the mirror is called Focal Length(f).

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