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The radius of curvature of a spherical mirror is 40 cm. What is its focal length ?​

Answer»

The FOCAL length of the given spherical mirror is 20cm.Explaination:Given-Radius of curvature, R = 40 CMRADIUS of curvature of a spherical mirror= > 2 X focal length(f)=> R = 2F=> f = R/2=> f = 40/2=> f = 20cm.Hence, the focal length of the given spherical mirror is 20cm



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