Question

define power of a lens​

Answer 1

Answer:

The power of a lens is defined as the reciprocal of the focal length. Lens power is measured in dioptres (D). ... Diverging (concave ) lenses have negative focal lengths, so they also have negative power values.

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Answer 2

The power of a lens is defined as the reciprocal of the focal length. Lens power is measured in dioptres (D). ... Diverging (concave ) lenses have negative focal lengths, so they also have negative power values.


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