Question

obtain an expression for magnification of an concave mirror

Answer 1

Answer:Formula: 1/f=1/v + 1 /u.

Explanation:

Answer 2

Magnification, $m=\dfrac{-v}{u}$

Explanation:

The magnification of a mirror is given by :

$m=\dfrac{-v}{u}$

Here,

u is the object distance

v is the image distance

The relation between the object, image distance and focal length is given by :

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

The focal length of concave mirror is negative.

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Magnification

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