Q137 / 155 · WBJEE 2021 · Physics
For two types of magnetic materials $A$ and $B$, variation of $\frac{1}{\chi}$ ( $\chi:$ susceptibility) vs. temperature $T$ is shown in the figure. Then
For two types of magnetic materials $A$ and $B$, variation of $\frac{1}{\chi}$ ( $\chi:$ susceptibility) vs. temperature $T$ is shown in the figure. Then
- A$\mathrm{A}$ is diamagnetic and $\mathrm{B}$ is paramagnetic
- Correct answerB$\mathrm{A}$ is ferromagnetic and $\mathrm{B}$ is diamagnetic
- CA is paramagnetic and B is ferromagnetic
- D$\mathrm{A}$ is paramagnetic and $\mathrm{B}$ is diamagnetic
Solution
Graph will be a straight line having +ve slope for ferromagnetic material and of 0 slope for diamagnetic material. 2)also change spelling of ferromagnetic in question from 'feromagnetic' to 'ferromagnetic' .
Hence, the correct answer is option: 'B'.