A magnet of magnetic moment $50\,\hat i\,A{\rm{ - }}{m^2}$ is placed along the $x-$ axis in a magnetic field $\overrightarrow B = (0.5\,\hat i + 3.0\hat j)\,T.$ The torque acting on the magnet is
  • A$175$  $\hat k\,\,N{\rm{ - }}m$
  • B$150$  $\hat k\,\,N{\rm{ - }}m$
  • C$75 $ $\hat k\,\,N{\rm{ - }}m$
  • D$25\sqrt {37} \,\hat k\,\,N{\rm{ - }}m$
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