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Question

What is meant by magnification? Write the formula for finding magnification by a spherical mirror.

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Solution

Magnification is the ratio of image height and object height. So mathematically we can write,
m=hiho
where m=magnification,
hi= height of image formed by the mirror
ho= height of object.
This formula can also be written in terms of object distance and image distance.
m=vu, where v is the image distance and u is the object distance.

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