a)Defineprincipalfocusofasphericalmirror.
b)Forwhatpositionoftheobjectdoesaconcavemirrorformarealinvertedand
diminishedimageoftheobject?Drawtheraydiagram.
c)Anobject4cmheightisplacedatadistanceof6cminfrontofaconcavemirror
offocallength12cm.Findthepositionoftheimageformed.
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