Following plots show magnetization (M) vs magnetizing field (H) and magnetic susceptibility ( χ) vs temperature (T) graph: Which of the following combination will be represented by a diamagnetic material? (a) (a), (c) (b) (a), (d) (c) (b), (d) (d) (b), (c)

Answer: (a). For a diamagnet, χ is small and negative, so M = χ H points opposite to H. The M – H graph is a straight line with negative slope: graph (a). Diamagnetic χ does not depend on temperature, so the χ – T graph is a horizontal line below the T -axis: graph (c). So the answer is (a): graphs (a) and (c).

Following plots show magnetization (M) vs magnetizing field (H) and… | JEE Main 2021 (1 Sep, Shift 2)

Q20JEE Main 2021 · 1 SEP · SHIFT 2Medium

Magnetic Materials & Curie Law

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?

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Answer: (a)

For a diamagnet, $\chi$ is small and negative, so $M = \chi H$ points opposite to $H$ . The $M$ – $H$ graph is a straight line with negative slope: graph (a).
Diamagnetic $\chi$ does not depend on temperature, so the $\chi$ – $T$ graph is a horizontal line below the $T$ -axis: graph (c).
So the answer is (a): graphs (a) and (c).

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Magnetic Materials & Curie Law question from JEE Main 2021 (1 Sep, Shift 2)

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