Question

define 1 diapotre of a power of a lens

Answer 1

Answer:

1 dioptre of power of a lens is described as the unit of measurement of the optical power of a lens or curved mirror equivalent to the reciprocal of focal length (f). Measurement of the focal length in a meter. The SI unit of power of lens is dioptre whose focal length is one meter, which is denoted by the letter D

Answer 2

1 diopter is 1/m.

In simple words, power of a lense is equal to 1/f where f is the focal lenth of the lens and it is taken in meter.

Unit of power of lens is diopter.

Hence, 1 diopter =1/m