Match List I with List II | | List I (Material) | | List II (Susceptibility $\chi$) | |---|---|---|---| | A. | Diamagnetic | I. | $\chi=0$ | | B. | Ferromagnetic | II. | $0 \chi \ge -1$ | | C. | Paramagnetic | III. | $\chi 1$ | | D. | Non-magnetic | IV. | $0

Question

Match List I with List II | | List I (Material) | | List II (Susceptibility $\chi$) | |---|---|---|---| | A. | Diamagnetic | I. | $\chi=0$ | | B. | Ferromagnetic | II. | $0 > \chi \ge -1$ | | C. | Paramagnetic | III. | $\chi >> 1$ | | D. | Non-magnetic | IV. | $0 < \chi < \varepsilon$ (a small positive number) | Choose the correct answer from the options given below.

Accepted Answer

A. 1. **Diamagnetic materials** are weakly repelled by a magnetic field, and their susceptibility is small and negative. This corresponds to the range. $$ 0 > \chi \ge -1 $$ So A matches with II. 2. **Ferromagnetic materials** get strongly magnetised and can retain magnetism, so their susceptibility is very large and positive. $$ \chi >> 1 $$ So B matches with III. 3. **Paramagnetic materials** are weakly attracted by a magnetic field, giving a small positive susceptibility bounded by a small number $\varepsilon$. $$ 0 < \chi < \varepsilon $$ So C matches with IV. 4. **Non-magnetic materials** neither attract nor repel field lines, so their susceptibility is exactly zero. $$ \chi = 0 $$ So D matches with I. Hence, the correct matching is A-II, B-III, C-IV, D-I, so the answer is **Option A**.

	List I (Material)		List II (Susceptibility $\chi$ )
A.	Diamagnetic	I.	$\chi=0$
B.	Ferromagnetic	II.	$0 > \chi \ge -1$
C.	Paramagnetic	III.	$\chi >> 1$
D.	Non-magnetic	IV.	$0 < \chi < \varepsilon$ (a small positive number)