Download the radius of curvature of a spherical mirror is 20cm. what is its focal length. class 10 light

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the radius of curvature of a spherical mirror is 20cm. what is its focal length. class 10 light the radius of curvature of a spherical mirror is 20cm. what is its focal length. class 10 light the radius of curvature of a spherical mirror is 20cm. what is its focal length. class 10 light

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