Question

what do you mean by power lens?

Answer 1

the ability of converging or diverging of lens is call power of lens

Answer 2

The power of a lens may be defined as the reciprocal of its focal length in metres. Its SI unit is dioptre (D) and it is denoted as P.

Power P = 1/ Focal length (f) in metres

P = 1/f = 100/f(in cm) 


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