What is the relation between focus and centre of curvature

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Dear Student,
$t h e r e l a t i o n b e t w e e n f o c u s (f) a n d c e n t r e o f c u r v a t u r e (r), r = 2 f$
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Similar questions

Q. Distance between focus and centre of curvature is equal to .

Q. A concave mirror produces magnification of +4. The object is placed:

(a) at the focus
(b) between focus and centre of curvature
(c) between focus and pole
(d) beyond the centre of curvature

Q. If a concave mirror forms a real magnified image of an object, the object is located

(a) between pole and focus
(b) between focus and centre of curvature
(c) beyond centre of curvature
(d) at centre of curvature

In order to obtain a magnification of −2 (minus 2) with a concave mirror, the object should be placed:
(a) between pole and focus
(b) between focus and centre of curvature
(c) at the centre of curvature
(d) beyond the centre of curvature

Q. In the concave reflector of a torch, the bulb is placed:

(a) between the pole and focus of reflector
(b) at the focus of reflector
(c) between focus and centre of curvature of reflector
(d) at the centre of curvature of reflector

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What is the relation between focus and centre of curvature

Dear Student, the relation between focusf and centre of curvaturer,r=2f Regards

Dear Student,
$t h e r e l a t i o n b e t w e e n f o c u s (f) a n d c e n t r e o f c u r v a t u r e (r), r = 2 f$
Regards