what the formulae of mirror and lens?
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Mirror formula
1/v + 1/u = 1/f
Lens formula
1/v - 1/u = 1/f
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It is an equation relating object distance and image distance with focal length is known as a mirror equation. It is also known as a mirror formula. In a spherical mirror: ... The distance between the Principal focus and pole of the mirror is called Focal Length(f)
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