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Magnetism and Matter: NEET 2024

Medium· Bar Magnet (Angular SHM, Tangent Law)· +4 / −1
In a uniform magnetic field of 0.049 T, a magnetic needle performs 20 complete oscillations in 5 seconds as shown. The moment of inertia of the needle is 9.8×10−6 kg m29.8\times10^{-6}\ \text{kg m}^2. If the magnitude of magnetic moment of the needle is x×10−5 A m2x\times10^{-5}\ \text{A m}^2, then the value of 'xx' is: A magnetic needle is suspended by a thread and is free to oscillate in a horizontal uniform magnetic field B⃗\vec B. Question diagram
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