$A$ magnet of magnetic moment $M$ is lying in a uniform magnetic field $B$. $W_1$ is the work done in turning it from $0^o$ to $60^o$ and $W_2$ is the work done in turning it from $30^o$ to $90^o$. Then:

  • A
    $W_2 = \frac{W_1}{2}$
  • B
    $W_2 = 2W_1$
  • C
    $W_2 = W_1$
  • D
    $W_2 = \sqrt{3} W_1$

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