List-I (Material) |
List-II (Susceptibility (\(\chi\))) |
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\(\mathrm{A.}\) | Diamagnetic | \(\mathrm{I.}\) | \(\chi=0\) |
\(\mathrm{B.}\) | Ferromagnetic | \(\mathrm{II.}\) | \(0>\chi\geq-1\) |
\(\mathrm{C.}\) | Paramagnetic | \(\mathrm{III.}\) | \(\chi\gg1\) |
\(\mathrm{D.}\) | Non-magnetic | \(\mathrm{IV.}\) | \(0<\chi<\varepsilon\) (a small positive number) |
1. | \(M\) | 2. | \(\dfrac{M\pi}{2}\) |
3. | \( \dfrac{M}{2\pi}\) | 4. | \(\dfrac{2M}{\pi}\) |
List-I (Material) | List-II (Example) | ||
A. | Diamagnet | I. | Alnico |
B. | Paramagnet | II. | Copper |
C. | Soft ferromagnet | III. | Aluminium |
D. | Hard ferromagnet | IV. | Gadolinium |
1. | 2. | ||
3. | 4. |
1. | \(\mu<\mu_{0}\) | 2. | \(0\leqslant\mu_{\mathrm{r}}<1\) |
3. | \(-1\leqslant\chi<0\) | 4. | \(1<\mu_r<1+\varepsilon\) |