1.

I. Deline 1 dioptre of power of a lens.

Answer»

Adioptre ordiopter is a unit of measurement of the opticalpower of a lensor curved mirror, which is equal to the reciprocal of the focal length measured in metres. (1 dioptre=1m−1.) It is thus a unit of reciprocal length.

1 dioptre is a unit of measurement of power of lens and equal to 1/f = 1/focal length.



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