The SI unit of power of a lens is_

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diopter

answer is D.

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Detailed Solution

The SI unit of power is diopter.
"The power of a lens is the ability of a lens to diverge or converge the light rays." It is equal to the reciprocal of the focal length of the lens in meters. Mathematically,

Power = \frac{1}{f (in mters)}

The SI unit of power of a lens is 'dioptre'.

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