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CBSE Class 10 Answered

The centre of curvature of a covnvex mirror is 20 cm,from the pole of the mirror find its length  
Asked by roshinirosy4698 | 20 May, 2019, 02:42: PM
answered-by-expert Expert Answer
Centre of curvature = 20 cm 
 
Thus, radius of curvature = 20 cm
 
We know, 
focal length = Radius of curvature/2 
 
f = R/2 
f = 20/2 = 10 cm 
 
As it is a convex mirror the focal length is positive. 
Thus, the focal length is +10 cm. 
Answered by Shiwani Sawant | 20 May, 2019, 04:25: PM
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