English, asked by harshithasubhashini6, 8 months ago

the power of lens is IDthen focal length is​

Answers

Answered by renupandey14211
2

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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