Question

define power of the lens with formula and SI unit​

Answer 1

Power of lens is the ability of the lens to converge the rays of light falling on it. It can also be defined as P=1/f where f is the focal length. S.I. unit of power is D(Dioptre). ... Power of a lens is the reciprocal of its focal length.

Answer 2

[HeY Mate]

$\huge\bold\red{Answer}$

➪Power Of Lens

$\tt \implies \: The \: ability \: of \: a \: lens \: to \: \\ \tt \: bend \: the \: light \: rays \: is \: \\ \tt \: called \: power \: of \: lens.$

➪Formula

D = 1/f, where D is the power in diopters and f is the focal length in meters.

➪SI unit

SI unit of power of lens is Dioptre.

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