$OABC$ is a current carrying square loop an electron is projected from the centre of loop along its diagonal $AC$ as shown. Unit vector in the direction of initial acceleration will be

131-177

  • A

    $\hat k$

  • B

    $ - \,\left( {\frac{{\hat i\, + \,\hat j}}{{\sqrt 2 }}} \right)$

  • C

    $=- \hat k$

  • D

    $\frac{{\hat i\, + \,\hat j}}{{\sqrt 2 }}$

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