Q 12-05-059JEE MainJEE Main 2021 (22 Jul, Shift 1)Easy
**Statement I:** The ferromagnetic property depends on temperature. At high temperature, ferromagnet becomes paramagnet.
**Statement II:** At high temperature, the domain wall area of a ferromagnetic substance increases.
In the light of the above statements, choose the most appropriate answer from the options given below:
Answer: (A) Statement I is true but Statement II is false.
Above the Curie temperature thermal agitation destroys the domain structure and a ferromagnet becomes paramagnetic: Statement I is true. The domains break up rather than grow, so the claim about domain walls increasing is not correct: Statement II is false.
Solution by Sreeraj P, M.Sc Physics