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प्रश्न
If the focal length of a convex mirror is 25 cm, what is its radius of curvature?
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उत्तर
The focal length of a convex mirror is 25 cm, i.e. 'f' is 25 cm.
So, the radius of curvature of the convex mirror,
`R`=`2f=2xx25=500cm`
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