AP EAMCET · PHYSICS · Magnetic Properties of Matter
A bar-magnet of moment of inertia \(49 \times 10^{-2} \mathrm{~kg}-\mathrm{m}^2\) vibrates in a magnetic field of induction \(0.5 \times 10^{-4} \mathrm{~T}\). The time period of vibration is \(8.8 \mathrm{~s}\). The magnetic moment of the bar magnet is
- A \(350 \mathrm{~A}-\mathrm{m}^2\)
- B \(490 \mathrm{~A}-\mathrm{m}^2\)
- C \(3300 \mathrm{~A}-\mathrm{m}^2\)
- D 5000 A-m \({ }^2\)
Answer & Solution
Correct Answer
(D) 5000 A-m \({ }^2\)
Step-by-step Solution
Detailed explanation
Time period of magnet is…
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