Is it true dioptre is the unit of power of the lens?

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True

False

answer is A.

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Detailed Solution

The above statement is True.
The ability of a lens to refract light through it increases with increasing lens power. The power determines the converging ability of a convex lens and the diverging ability of a concave lens. The reciprocal of a lens's focal length in metres is the lens's power. The SI power unit is the dioptre (D).

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