Science, asked by megha911910c, 6 months ago

10. How is power of a lens related to its focal length​

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Answered by Rizakhan678540
1

Answer:

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

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