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CBSE Class 10 Answered

What is Radius of Curvature, Optic centre, focal length?
Asked by vaibhavsingh73329 | 10 Sep, 2019, 02:15: PM
answered-by-expert Expert Answer
Radius of curvature: The radius of curvature of a spherical mirror is the radius of the sphere of which the reflecting surface of spherical mirror is a part and is represented by r’ 
Focal point : It is the distance between the pole P and the focus F and is represented by f. If f is the focal length and r is the radius of curvature then f=r/2 or r = 2f and this relation is for concave and convex mirrors.
Optical centre: The optical centre is the actual geometrical centre of the lens.
Answered by Shiwani Sawant | 10 Sep, 2019, 03:49: PM

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