Q. No.Choose the correct statement regarding magnetism.
| 1. | Paramagnetic sample displays greater magnetization when cooled. |
| 2. | Diamagnetism is almost independent of temperature. |
| 3. | Ferromagnetic substances show hysteresis. |
| 4. | All of these. |
Subtopic: Magnetic Materials |
91%
From NCERT
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The magnetic susceptibility is negative for:
| 1. | paramagnetic material only |
| 2. | ferromagnetic material only |
| 3. | paramagnetic and ferromagnetic materials |
| 4. | diamagnetic material only |
Subtopic: Magnetic Materials |
87%
From NCERT
NEET - 2016
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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:
| 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: Magnetic Materials |
87%
From NCERT
AIPMT - 2011
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If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is:
| 1. | repelled by both the poles |
| 2. | repelled by the north pole and attracted by the south pole |
| 3. | attracted by the north pole and repelled by the south pole |
| 4. | attracted by both the poles |
Subtopic: Magnetic Materials |
85%
From NCERT
NEET - 2009
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Needles N1, N2 and N3 are made of ferromagnetic, paramagnetic, and diamagnetic substances respectively. A magnet, when brought close to them, will:
| 1. | attract all three of them |
| 2. | attract N1 and N2 strongly but repel N3 weakly |
| 3. | attract N1 strongly, N2 weakly and repel N3 weakly |
| 4. | attract N1 strongly, but repel N2 and N3 weakly |
Subtopic: Magnetic Materials |
87%
From NCERT
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The susceptibility of a paramagnetic material is \(99.\) The permeability of the material in Wb/A-m is:
(Permeability of free space, \(\mu_{0}=4\pi \times 10^{-7}\) Wb/A-m )
1. \(4 \pi \times 10^{-7} \)
2. \( 4 \pi \times 10^{-4} \)
3. \( 4 \pi \times 10^{-5} \)
4. \( 4 \pi \times 10^{-6}\)
(Permeability of free space, \(\mu_{0}=4\pi \times 10^{-7}\) Wb/A-m )
1. \(4 \pi \times 10^{-7} \)
2. \( 4 \pi \times 10^{-4} \)
3. \( 4 \pi \times 10^{-5} \)
4. \( 4 \pi \times 10^{-6}\)
Subtopic: Magnetic Materials |
85%
From NCERT
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Diamagnetic material in a magnetic field moves:
| 1. | from stronger to the weaker parts of the field |
| 2. | from weaker to the stronger parts of the field |
| 3. | perpendicular to the field |
| 4. | in none of the above directions |
Subtopic: Magnetic Materials |
80%
From NCERT
AIPMT - 2003
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If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by µd, µp, and µf respectively, then:
1. µp = 0 and µf ≠ 0
2. µd ≠ 0 and µp = 0
3. µd ≠ 0 and µf ≠ 0
4. µd = 0 and µp ≠ 0
Subtopic: Magnetic Materials |
79%
From NCERT
AIPMT - 2005
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The material which is used to make permanent magnet has:
| 1. | High retentivity, low coercivity |
| 2. | Low retentivity, low coercivity |
| 3. | Low retentivity, high coercivity |
| 4. | High retentivity, high coercivity |
Subtopic: Magnetic Materials |
73%
From NCERT
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Select the incorrect statement regarding magnetic material.
| 1. | The magnetic dipole moment of each atom of para and ferromagnetic substance is zero and that of diamagnetic material is non-zero in the absence of external magnetizing force |
| 2. | When the diamagnetic substance is brought near the north or south pole of a bar magnet, it is repelled |
| 3. | Magnetic susceptibility of diamagnetic substances is temperature independent and that of para and ferromagnetic substances is temperature-dependent |
| 4. | All of these |
Subtopic: Magnetic Materials |
73%
From NCERT
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