The variation of the intensity of magnetisati | vedclass

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(B) For a diamagnetic substance,the magnetic susceptibility $(\chi)$ is small and negative.The relationship between the intensity of magnetisation $(I

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$OC$

Vedclass · Answer

(B) For a diamagnetic substance,the magnetic susceptibility $(\chi)$ is small and negative.The relationship between the intensity of magnetisation $(I)$ and the magnetising field $(H)$ is given by $I = \chi H$.Since $\chi$ is negative,$I$ is also negative for a positive $H$.This implies that the graph of $I$ versus $H$ must lie in the fourth quadrant (where $I$ is negative and $H$ is positive).Among the given options,the line $OC$ represents a linear relationship with a negative slope,which corresponds to the behavior of a diamagnetic substance.

The variation of the intensity of magnetisation $(I)$ with respect to the magnetising field $(H)$ in a diamagnetic substance is described by the graph

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