A hoop and a solid cylinder of same mass and radius are made of a permanent magnetic material with their magnetic moment parallel to their respective axes. But the magnetic moment of hoop is twice of solid cylinder. They are placed in a uniform magnetic field in such a manner that their magnetic moments make a small angle with the field. If the oscillation periods of hoop and cylinder are 
and 
respectively, then:
Text Solution
Verified by ExpertsA
JEE Main 2019
Using, time /oscillation period,
Where, 
magnetic moment, 
moment of inertia and 
magnetic field
Clearly, 
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