What is the power of a convex lens with a foc | vedclass

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(C) The focal length $(f)$ of the convex lens is given as $20 	ext{ cm}$.Since the focal length must be in meters for the power calculation,we conver

Vedclass · Accepted Answer

$+5.0 	ext{ D}$

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(C) The focal length $(f)$ of the convex lens is given as $20 	ext{ cm}$.Since the focal length must be in meters for the power calculation,we convert it: $f = 20 	ext{ cm} = 0.2 	ext{ m}$.The formula for the power $(P)$ of a lens is $P = 1/f$ (where $f$ is in meters).Substituting the value: $P = 1 / 0.2 = 5 	ext{ D}$.Since it is a convex lens,the power is positive.Therefore,the power is $+5.0 	ext{ D}$.

What is the power of a convex lens with a focal length of $20 \text{ cm}$?

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