The magnetic susceptibility is negative for:

1. paramagnetic materials only
2. diamagnetic materials only
3. ferromagnetic materials only
4. paramagnetic and ferromagnetic materials
Subtopic:  Magnetic Materials |
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Level 1: 80%+
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Among which of the following the magnetic susceptibility does not depend on the temperature:
1. Diamagnetism 
2. Paramagnetism
3. Ferromagnetism
4. Ferrite

Subtopic:  Magnetic Materials |
 89%
Level 1: 80%+
AIPMT - 2001
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The permanent magnetic moment of the atoms of a material is zero. The material:

a. must be paramagnetic
b. must be diamagnetic
c. must be ferromagnetic
d. may be paramagnetic

Choose the correct option:
1. (a), (b)
2. (b) only
3. (c), (d)
4. (a), (d)

Subtopic:  Magnetic Materials |
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Level 1: 80%+
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For a ferromagnetic material, the susceptibility is:
1. Large and negative 2. Large and positive
3. Small and positive 4. Small and negative
Subtopic:  Magnetic Materials |
 87%
Level 1: 80%+
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Given below two statements:
Statement I:  For diamagnetic substances, \(-1 \leq \chi <0 ,\) where \(\chi\) is the magnetic susceptibility.
Statement II: Diamagnetic substances, when placed in an external magnetic field, tend to move from the stronger to the weaker part of the field.
 
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct, and Statement II is incorrect.
4. Statement I is incorrect, and Statement II is correct.
Subtopic:  Magnetic Materials |
 83%
Level 1: 80%+
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Match the terms of Column-I with the items of Column-II and choose the correct option from the codes given below.
Column-I Column-II
\(\mathrm{(A)}\) Diamagnetic \(\mathrm{(P)}\) \(\mu>>\mu_0.\mu_r>>1\) and \(\chi>>1\)
\(\mathrm{(B)}\) Paramagnetic \(\mathrm{(Q)}\) \(-1\leq\chi<0,0\leq\mu_r<1\) and \(\mu<\mu_0\)
\(\mathrm{(C)}\) Ferromagnetic \(\mathrm{(R)}\) \(0<\chi<\varepsilon,1<\mu_r<1+\varepsilon\) and \(\mu>\mu_0\)

Codes:
1. \(A\rightarrow P,B\rightarrow Q,C\rightarrow R \)
2. \(A\rightarrow Q,B\rightarrow R,C\rightarrow P\)
3. \(A\rightarrow Q,B\rightarrow P,C\rightarrow R \)
4. \(A\rightarrow R,B\rightarrow Q,C\rightarrow P \)
Subtopic:  Magnetic Materials |
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There are four light –weight –rod sample A, B, C, D separately suspended by threads. A bar magnet is slowly brought near each sample and the following observation 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 |
 80%
Level 1: 80%+
AIPMT - 2011
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Domain formation is the necessary feature of: 
1. ferromagnetism
2. diamagnetism
3. paramagnetism
4.  all of these

Subtopic:  Magnetic Materials |
 76%
Level 2: 60%+
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The magnetic moment of a diamagnetic atom is:
 
1. much greater than one
2. one
3. between zero and one
4. equal to zero
Subtopic:  Magnetic Materials |
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The magnetic susceptibility of an ideal diamagnetic substance is:
1. \(-1\)
2. \(0\)
3. \(+1\)
4. \(\infty \)

Subtopic:  Magnetic Materials |
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Level 2: 60%+
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