Question

write the relationship between focal length and radius of curvature​

Answer 1

Answer:

the ralation bet focal length and radius is r=2f

Answer 2

Answer:

• The radius of curvature (r) is the radius of the lens that forms a complete sphere . The focal length (f) of a lens is the distance between the center of the length and the point at which the reflected light, of a beam of light travelling parallel to center line meets the center line (principal axis)

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