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Find out how the focal length of a lens may be determined by the given power of the lens?

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by harishchinna

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by harishchinna

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

so Power is the reciprocal of the focal length of the lens

so you take out the Focal length

the unit is in metres

so Power is the reciprocal of the focal length of the lens

so you take out the Focal length

the unit is in metres