Question

6. Relationship between focal length and radius of curvature is :​

Answer 1

Answer:

The distance from the pole to the focal point is called the focal length (f). The focal length of a spherical mirror is then approximately half its radius of curvature. It is important to note up front that this is an approximately true relationship.

In differential geometry, the radius of curvature, R, is the reciprocal of the curvature. For a curve, it equals the radius of the circular arc which best approximates the curve at that point. For surfaces, the radius of curvature is the radius of a circle that best fits a normal section or combinations thereof.

Explanation:

The relationship between the focal length f and radius of curvature r is r = 2f

Answer 2

Answer:

Focal length and Radius of curvature are related as f=2R

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