Define power of a lens. Write its unit.

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Solution

Dear Student
Power of lens = 1/focal length(metres).
Power of the lens is inversely proportional to the focal length of lens in metre.
The SI unit of power of lens is dioptre.

Regards

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Define power of a lens. Write its unit.

Dear Student Power of lens = 1/focal length(metres). Power of the lens is inversely proportional to the focal length of lens in metre. The SI unit of power of lens is dioptre. Regards

Dear Student
Power of lens = 1/focal length(metres).
Power of the lens is inversely proportional to the focal length of lens in metre.
The SI unit of power of lens is dioptre.

Regards