f = R / 2 The power of a mirror is given as P = 1 / f ( metre ) ( vi ) Mirror formula 1 / f = 1 / v + 1 / u
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Linear Magnification
The ratio of height of image ( 1 ) formedby a mirror to the height of the object ( O ) is called linear magnification ( m ).
Lin ear magnification ( m ) = I / O = -v / u
Areal and Axial Magnification
The ratio of area of image to the area of object is called areal magnification .