The variation of the intensity of magnetisati | vedclass

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(B) The intensity of magnetisation is given by the relation $I = \chi H$,where $\chi$ is the magnetic susceptibility of the material.For diamagnetic s

Vedclass · Accepted Answer

$OC$

Vedclass · Answer

(B) The intensity of magnetisation is given by the relation $I = \chi H$,where $\chi$ is the magnetic susceptibility of the material.For diamagnetic substances,the magnetic susceptibility $\chi$ is negative and its magnitude is very small (i.e.,$|\chi| \ll 1$).Since $I = \chi H$ and $\chi Because the magnitude of $\chi$ is very small,the slope of the line must be small,meaning the line should be close to the $H$-axis in the fourth quadrant.Among the given options,line $OC$ represents a small negative slope,which correctly describes the variation of $I$ with $H$ for a diamagnetic substance.Therefore,option $B$ is the correct answer.

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

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