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The radius of curvature of a spherical m...

The radius of curvature of a spherical mirror is 20cm what is its focal length

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Radius of curvature, R = 20 ctn Radius of curvature of a spherical mirror= 2 x Focal length (f) R= 2f, f R/2 = 20 I 2 = 10 cm the focal length of the given spherical mirror is 10cm
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