Identify the incorrect relation for a paramagnetic material (all the symbols carry their usual meani

Question

Identify the incorrect relation for a paramagnetic material (all the symbols carry their usual meanings and $\varepsilon$ is a small positive number).

Professor PC Thomas Classes · Answer

(a) : For a paramagnetic material, the magnetic susceptibility $\chi$ is a small positive number ($0 < \chi < \varepsilon$). Therefore, the relation $\chi < 0$ is incorrect, as negative susceptibility is a characteristic property of diamagnetic materials.