# According to the "New Cartesian Sign Convention" for mirros, when sigh has been given to the focal length of : (i) a concave mirror ? (ii) a convex mi

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According to the "New Cartesian Sign Convention" for mirros, when sigh has been given to the focal length of :
(i) a concave mirror ?
(ii) a convex mirror ?

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Focal length of a concave mirror is negative.