Question

mirror formula and lens formula

Answer 1

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

Where,

v is image distance

u is object distance

f is focal length of the mirror.

$\huge \mathbb \red{lens \: formula = \frac{1}{v} - \frac{1}{u} } = \frac{1}{f}$

Answer 2

Mirror formula:

1/v + 1/u = 1/f

Lens formula:

1/v - 1/u = 1/f

HOPE IT HELPS

Thanking you

Yours truly

ZunayedTIME