How are power and focal length of a lens related?

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Solution

power of the lens is inversely proportional to its focal length
$P \propto$ $\frac{1}{F}$

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How are power and focal length of a lens related?

power of the lens is inversely proportional to its focal lengthP∝1F

power of the lens is inversely proportional to its focal length
$P \propto$ $\frac{1}{F}$