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) |
List-I (Material) |
List-II (Example) |
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A | Diamagnet | I | Alnico |
B | Paramagnet | II | Copper |
C | Soft ferromagnet | III | Aluminium |
D | Hard ferromagnet | IV | Gadolinium |
1. | 2. | ||
3. | 4. |
1. | 2. | ||
3. | 4. |
Assertion (A): | Gauss's law for magnetism states that the net magnetic flux through any closed surface is zero. |
Reason (R): | The magnetic monopoles do not exist. North and South poles occur in pairs, allowing vanishing net magnetic flux through the surface. |
1. | (A) is true but (R) is false. |
2. | (A) is false but (R) is true. |
3. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
4. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |