Physics, asked by ribckadasari, 10 months ago

power of lens is +1d then find the focal length?

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Answered by avats673

3

Answer:

1.dioptre is SI unit of the power of a lens whose focal length is 1 metre. It is denoted by the letter D. Thus 1D = 1 m-1. Simply, when focal length ' f ' is expressed in metres, then, power is expressed in dioptres.

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