1.

Define 1 dioptre of power of alens​

Answer»

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.

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