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            <video:title>Sign convention for mirrors (&amp; lenses)</video:title>
            <video:description>Let&#39;s explore the sign conventions (rules to assign +ve and -ve values) we use for mirrors and lenses. These rules are called Cartesian sign conventions.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/Mc--Yz_YrsU.mp4/Mc--Yz_YrsU.mp4</video:player_loc>
            <video:duration>610</video:duration>
            <video:category>Reflection of light at curved surfaces</video:category>
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                    href="https://www.khanacademy.org/science/tg-board-preparation-class-10/xa97495786f3cc874:week-3/xa97495786f3cc874:reflection-of-light-at-curved-surfaces/e/reflection-of-light-from-curved-surfaces-tg-board-preparation" />
        
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