Two short bar magnets of moments ' $\mathrm{M}$ ' and ' $\sqrt{3} \mathrm{M}$ ' are joined like a cross (+).…

Two short bar magnets of moments ' $\mathrm{M}$ ' and ' $\sqrt{3} \mathrm{M}$ ' are joined like a cross (+). This cross is suspended from its centre with its plane horizontal in the earth's magnetic field. When the cross comes to equilibrium, angle made by the weaker magnet with the earth's magnetic field $B_H$ is
  1. $\begin{aligned} & 30^{\circ} \end{aligned}$
  2. $\begin{aligned} & 45^{\circ} \end{aligned}$
  3. $\begin{aligned} & 75^{\circ}\end{aligned}$
  4. $\begin{aligned} &60^{\circ}\end{aligned}$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (26 Apr Shift 2)

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