A hoop and a solid cylinder of same mass|EMI|JEE MAIN 2019

JEE MAIN 2019

10-01-2019 S2

Question

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 Th and Tc respectively, then

Select the correct option:

$\mathrm{T}_{\mathrm{h}}=0.5 \mathrm{~T}_{\mathrm{c}}$

$\mathrm{Th}=\mathrm{T}_{\mathrm{c}}$

$T_h=2 T_c$

$\mathrm{Th}=1.5 \mathrm{~T}_{\mathrm{c}}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution