- 1(current)
Q. No.The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and \(\varepsilon\) is a small positive number) is:
| 1. | \(\mu<\mu_{0}\) | 2. | \(0\leqslant\mu_{\mathrm{r}}<1\) |
| 3. | \(-1\leqslant\chi<0\) | 4. | \(1<\mu_r<1+\varepsilon\) |
Subtopic: Â Magnetic Materials |
 60%
Level 2: 60%+
NEET - 2024
Hints
Match List-I with List-II.
Choose the correct answer from the options given below:
| List-I (Material) | List-II (Example) | ||
| (A) | Diamagnet | (I) | Alnico |
| (B) | Paramagnet | (II) | Copper |
| (C) | Soft ferromagnet | (III) | Aluminium |
| (D) | Hard ferromagnet | (IV) | Gadolinium |
Choose the correct answer from the options given below:
| 1. | A-I, B-II, C-III, D-IV | 2. | A-IV, B-III, C-II, D-I |
| 3. | A-III, B-II, C-I, D-IV | 4. | A-II, B-III, C-IV, D-I |
Subtopic: Â Magnetic Materials |
 58%
Level 3: 35%-60%
NEET - 2024
Hints
The best suited curve showing the variations of susceptibility (\(\chi\)) of a paramagnetic material in free space with temperature (\(T\)) is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Â Magnetic Materials |
 82%
Level 1: 80%+
NEET - 2024
Hints
Match List-I with List-II.
Choose the correct answer from the options given below:
| List-I Material |
List-II Susceptibility \((\chi)\) |
||
| \(\mathrm{(A)}\) | 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. | \(\text{A-II, B-I, C-III, D-IV}\) | 2. | \(\text{A-III, B-II, C-I, D-IV}\) |
| 3. | \(\text{A-IV, B-III, C-II, D-I}\) | 4. | \(\text{A-II, B-III, C-IV, D-I}\) |
Subtopic: Â Magnetic Materials |
 67%
Level 2: 60%+
NEET - 2024
Hints
A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up, out of the horizontal magnetic field. Hence the rod gains gravitational potential energy. The work required to do this comes from:
| 1. | the current source |
| 2. | the magnetic field |
| 3. | the lattice structure of the material of the rod |
| 4. | the induced electric field due to the changing magnetic field. |
Subtopic: Â Magnetic Materials |
 55%
Level 3: 35%-60%
NEET - 2018
Hints
Links
The magnetic susceptibility is negative for:
| 1. | paramagnetic material only. |
| 2. | ferromagnetic material only. |
| 3. | paramagnetic and ferromagnetic materials. |
| 4. | diamagnetic material only. |
Subtopic: Â Magnetic Materials |
 89%
Level 1: 80%+
NEET - 2016
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Links
- 1(current)
Q. No.
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