Question

The range of magnetic susceptibility and relative magnetic permeability for diamagnetic substances are

• A. $-1 \ge \chi > 0$, $0 \le \mu_{r} < 1$
• B. $-1 \le \chi > 0$, $0 \ge \mu_{r} < 1$
• C. $-1 \ge \chi > 1$, $0 \le \mu_{r} < 1$
• D. $-1 \le \chi > 0, 0 \le \mu_{r} < 1$

Answer 1

Answer: (D)

$-1 \le \chi > 0, 0 \le \mu_{r} < 1$

Answer 2

Theory states that susceptibility of diamagnetic substances as, $-1 \leq X \leq 0$ Relation between $X$ and $\mu_{ r }$ $\Rightarrow X _{ m }=\mu_{ r }-1$ $\Rightarrow \mu_{ r }=1+ X _{ m }$ $\Rightarrow-1 \leq X \leq 0,$ add one. $\Rightarrow 0 \leq 1+ X \leq 1,\,\, 0 \leq \mu_{ r } \leq 1$