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Express the relation between the power (...

Express the relation between the power (P) and the focal length of a lens.

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Power of lens `(P)=(l)/("Focal length of the lens in metre (f)")`
`P=(l)/(f)`
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ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-ZEN ADDITIONAL QUESTIONS SECTION (VERY SHORT ANSWER TYPE QUESTIONS) VSA
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