Question

What is the relation between focal length and radius of curvature

Answer 1

heya...

F = R/2

Or

R = 2 F

where F = focal length and

R = radius of curvature

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 centre of the lens point at which the reflected light , of a beam of light travelling parallel to the center line , meets the center line

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