Q. No.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%
From NCERT
NEET - 2016
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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 |
 70%
From NCERT
NEET - 2024
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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. \(1<\mu_r<1+\varepsilon\)
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%
From NCERT
NEET - 2024
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A regular array of identical vertical current-carrying wires, each passing through a horizontal table, is arranged as shown in the figure (with the direction of current flow indicated). Where are diamagnetic particles most likely to accumulate if they are scattered on the table?
| 1. | Around regions such as \(A.\) |
| 2. | Around regions such as \(B.\) |
| 3. | In circular regions around individual wires such as \(C.\) |
| 4. | Uniformly everywhere. |
Subtopic: Â Magnetic Materials |
From NCERT
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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 |
| 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 |
 60%
From NCERT
NEET - 2024
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There are four light-weight-rod samples \(A,\) \(B,\) \(C,\) \(D\) separately suspended by threads. A bar magnet is slowly brought near each sample and the following observations are noted:
Which one of the following is true?
| (i) | \(A\) is feebly repelled. | (ii) | \(B\) is feebly attracted. |
| (iii) | \(C\) is strongly attracted. | (iv) | \(D\) remains unaffected. |
Which one of the following is true?
| 1. | \(C\) is of a diamagnetic material. |
| 2. | \(D\) is of a ferromagnetic material. |
| 3. | \(A\) is of a non-magnetic material. |
| 4. | \(B\) is of a paramagnetic material. |
Subtopic: Â Magnetic Materials |
 89%
From NCERT
AIPMT - 2011
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A ferromagnetic material consists of domains in which the magnetic moments of the atoms are in the same direction within each domain. However, the domains are randomly oriented. A ferromagnetic material is placed in an external magnetic field. Then,
| 1. | all the domains grow in size. |
| 2. | all the domains shrink in size. |
| 3. | some domains grow in size, others shrink. |
| 4. | domains rotate in the magnetic field. |
Subtopic: Â Magnetic Materials |
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Two small paramagnetic samples are placed in an (otherwise uniform) strong external magnetic field \(B.\) If the two samples are placed with a separation that is along the direction of the external field \(B,\) then, the force exerted by the two samples on each other is:
| 1. | attractive. |
| 2. | repulsive. |
| 3. | zero. |
| 4. | any of the above depending on the external field \(B\) and the sample separation. |
Subtopic: Â Magnetic Materials |
 55%
From NCERT
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Given below are two statements:
| Assertion (A): | A disc-shaped magnet is levitated above a superconducting material that has been cooled by liquid nitrogen. |
| Reason (R): | Superconductors repel a magnet. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Magnetic Materials |
 72%
From NCERT
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The primary origin(s) of magnetism lies in
Choose the correct options:
1. (a), (d)
2. (a), (b), (c)
3. (b), (d)
4. (c), (d)
| (a) | atomic currents. |
| (b) | Pauli exclusion principle. |
| (c) | polar nature of molecules. |
| (d) | intrinsic spin of electron. |
Choose the correct options:
1. (a), (d)
2. (a), (b), (c)
3. (b), (d)
4. (c), (d)
Subtopic: Â Magnetic Materials |
From NCERT
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