Question

Define one dioptre of power of a lens.​

Answer 1

Explanation:

Power of the lens is the ability of a lens to converge the rays falling on it. ... One dioptre is the power of the lens whose focal length is 1m. Note – To solve this problem you need to know that the power of the lens is reciprocal of its focal length.

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Answer 2

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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