Question

Name and define the si unit of power of a Lens

Answer 1

Define power of a lens and write its SI unit. ... It is defined as the reciprocal of focal length or it is the ability of a lens to bend the rays of light falling on it. Its SI unit is dioptre.

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Answer 2

Hi ...

here is ur answer ...

SI unit of Power of a lens is Diopter ..

• it is denoted by D .. the SI unit of lenght is metre ( m ) .

====>> The ability of lens to converge/diverge a beam light rays is expressed in terms of its power p = 1/f

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