Physics · 2019
JEE Main · 10 January 2019, Shift 2 · Q19
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…
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 $\displaystyle \mathrm{T}_{\mathrm{h}}$ and $\displaystyle \mathrm{T}_{\mathrm{c}}$ respectively, then :
Official answer
(3)
$\displaystyle \mathrm{T}_{\mathrm{h}}=\mathrm{T}_{\mathrm{c}}$
More from Magnetism and Matter
- Two identical small bar magnets each of dipole moment 3 √5 J / T are placed at a center to center separation of 10 cm, with their axes perpendicular…2026
- The figure gives experimentally measured B vs. H variation in a ferromagnetic material. The retentivity, co-ercivity and saturation, respectively, of…2020
- The vertical component of the earth's magnetic field is 6 × 10^-5 T at any place where the angle of dip is 37^°. The earth's resultant magnetic field…2022
- Choose the correct option:2021
- Which of the following statements are correct? Electric monopoles do not exist whereas magnetic monopoles exist. Magnetic field lines due to a…2021
- Given below are two statements: Statement I: For diamagnetic substance, -1 ≤ χ<0, where χ is the magnetic susceptibility. Statement II: Diamagnetic…2023
- A solenoid has a core made of material with relative permeability 400. The magnetic field produced in the interior of solenoid is 1.0 T. The magnetic…2026
- A bar magnet with a magnetic moment 5.0 Am^2 is placed in parallel position relative to a magnetic field of 0.4 T. The amount of required work done…2023
JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.