JEE Main202122 Jul 2021Morning ShiftPhysicsMagnetic Properties of MatterActual
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:
Options
- AStatement I is true but Statement II is false.
- BBoth Statement I and Statement II are true.
- CBoth Statement I and Statement II are false.
- DStatement I is false but Statement II is true.
Correct answer
A. Statement I is true but Statement II is false.
Step-by-step solution
As temperature increases, domains disintegrate so ferromagnetism decreases and above curie temperature it become paramagnet.