Write formula of finding P of a lens
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Merry Christmas,
Dn = (u-1)/r1 + (u-1)/r2
Dn = (u-1)/r1 + (u-1)/r2
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Power of the lens is denoted by letter 'D' (Dioptre)
Power of the lens = 1/focal length of the respective lens
Therefore,
Power = 1/f
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