Question:
Following plots show magnetization (M) vs magnetizing field (H) and magnetic susceptibility (\(\chi\)) vs temperature (T) graph :
Which of the following combination will be represented by a diamagnetic material?
Following plots show magnetization (M) vs magnetizing field (H) and magnetic susceptibility (\(\chi\)) vs temperature (T) graph :
Which of the following combination will be represented by a diamagnetic material?
Which of the following combination will be represented by a diamagnetic material?
Show Hint
A diamagnetic substance has a small negative susceptibility that is independent of temperature, so M falls linearly with H.
Updated On: Nov 4, 2026
- (a), (c)
- (a), (d)
- (b), (d)
- (b), (c)
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The Correct Option is A
Solution and Explanation
Figure: (a) M vs H is a straight line of negative slope; (b) M vs H is a straight line of positive slope; (c) \(\chi\) vs T is a horizontal line below the T axis (negative, constant); (d) \(\chi\) vs T is a decreasing curve of the type \(\chi \propto 1/T\) in the positive region.
For a diamagnetic material \(\chi \lt 0\), so \(M = \chi H\) has a negative slope: plot (a). Also \(\chi\) is independent of temperature: plot (c).
(b) corresponds to a positive susceptibility and (d) is the Curie-law behaviour of a paramagnetic material.
The diamagnetic combination is (a), (c).
Answer: (1) (a), (c)
For a diamagnetic material \(\chi \lt 0\), so \(M = \chi H\) has a negative slope: plot (a). Also \(\chi\) is independent of temperature: plot (c).
(b) corresponds to a positive susceptibility and (d) is the Curie-law behaviour of a paramagnetic material.
The diamagnetic combination is (a), (c).
Answer: (1) (a), (c)
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