Question

write relation between focal length and radius of curvature​

Answer 1

$\huge\underline\mathrm{Question}$

write relation between focal length and radius of curvature.

$\huge\underline\mathrm{AnSweR}$

The radius of curvature (r) is the radius of the lens that forms a complete sphere. Therefore, the radius of curvature is twice the focal length.

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Answer 2

Explanation:

double of focal length is half of radius 2f=r andf=r/2 .is the answer.