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Magnetic Properties of Matter question

2021 · 27 Jul · Shift 1 · Q72
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  5. /2021 · 27 Jul · Shift 1 · Q72

Magnetic Properties of Matter question

2021 · 27 Jul · Shift 1 · Q72

JEE MainPhysicsMagnetic Properties of MatterNumerical+4 / −1
In a uniform magnetic field, the magnetic needle has a magnetic moment 9.85 ×\times× 10 −-− 2 A/m2 and moment of inertia 5 ×\times× 10 −-− 6 kg m2. If it performs 10 complete oscillations in 5 seconds then the magnitude of the magnetic field is ‾\underline{\hspace{2cm}}​ mT. [Take π\piπ 2 as 9.85]
Numerical answer
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