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JEE PHYSICS MCQ: MAGNETISM AND MATTER

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A magnetic dipole is under the influence of two magnetic fields making an angle 45o{45^\mathrm{o}} between them. One of the fields has magnitude 2.828×10−2T2.828 \times {10^{ - 2}}T. If the dipole comes to stable equilibrium with the above field at an angle of 30o{30^\mathrm{o}} then the other magnetic field is
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Correct option: B
2×10−2T2 \times {10^{ - 2}}T
Option B (2×10−2T2 \times {10^{ - 2}}T) is correct because at stable equilibrium, the torques due to the two magnetic fields must balance each other.

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