PhysicsMedium202×since 2002Q8371Let A→\overrightarrow AA = (i^+j^)\left( {\widehat i + \widehat j} \right)(i+j) and, B→=(2i^−j^).\overrightarrow B = \left( {2\widehat i - \widehat j} \right).B=(2i−j). The magnitude of a coplanar vector C→\overrightarrow CC such that A→.C→=B→.C→=A→.B→,\overrightarrow A .\overrightarrow C = \overrightarrow B .\overrightarrow C = \overrightarrow A .\overrightarrow B ,A.C=B.C=A.B, is given by :A109\sqrt {{{10} \over 9}}910B59\sqrt {{{5} \over 9}}95C209\sqrt {{{20} \over 9}}920D912\sqrt {{{9} \over 12}}129Check answerSkip