Define 1 dioptre of power of a lens.
The SI unit of power of lens is dioptre which is denoted by the letter D. 1 dioptre is defined as the power of a lens of focal length 1 metre.
1 dioptre is the power of a lens whose focal length is 1 metre.
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Solution Define 1 Dioptre of Power of a Lens. Concept: Refraction at Spherical Surfaces and by Lenses - Power of a Lens.