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The radius of curvature of a spherical mirror is 20 cm. What is its focal length ?​

Answer»

10cmExplanation:Given-Radius of CURVATURE, R = 20 CMRADIUS of curvature of a spherical mirror= > 2 x focal length(f)=> R = 2F=> f = R/2=> f = 20/2=> f = 10 cm.Hence, the focal length of the given spherical mirror is 10 cm



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