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.