Question

Define 1 dioptre of power of a lens

Answer 1

Dioptre= a unit for measuring the refractive power of a lens: the reciprocal of the focal length of the lens expressed in meters

Answer 2

✨✔️✔ ️HERE IS YOUR ANSWER...

✔ ️The power of lens is defined as the reciprocal of its focal length.

✔️ The SI unit of power of lens is “dioptre”.
• It is denoted by the letter “D”.
• 1 D is the power of a lens whose focal length is 1m.

✨✔️✔️ HOPE IT HELPS YOU....
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