Physics, asked by silverster9945, 3 months ago

Focal length and power of lens

Answers

Answered by imansubasuroy

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.

Answered by sonusagar50

Answer:the focal length is the distance from the center of the lens to the principal foci (or focal points) of the lens.

The power of a lens is a measure of its ability to produce deviation of light.

Explanation:

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