Question 6: Match List-I with List-II
| List-I (Material) | List-II (Susceptibility (\chi)) |
| A. Diamagnetic | I. \chi=0 |
| B. Ferromagnetic | II. 0>\chi \geq -1 |
| C. Paramagnetic | III. \chi \gg 1 |
| D. Non-Magnetic | IV. 0<\chi<\varepsilon (a small positive number) |
Choose the correct answer from the options given below:
(1) A-II, B-III, C-IV, D-I
(2) A-II, B-I, C-III, D-IV
(3) A-III, B-II, C-I, D-IV
(4) A-IV, B-III, C-II, D-I
Answer: Option (1)
Explanation:
Magnetic susceptibility \chi indicates how a material responds to an applied magnetic field.
Diamagnetic substances are weakly repelled by a magnetic field and have small negative susceptibility, hence 0>\chi \geq -1.
Therefore, A matches with II.
Ferromagnetic substances are strongly attracted by a magnetic field and have very large positive susceptibility, so \chi \gg 1.
Hence, B matches with III.
Paramagnetic substances are weakly attracted by a magnetic field and have small positive susceptibility, given by
0<\chi<\varepsilon. Thus, C matches with IV.
Non-magnetic substances do not respond to a magnetic field,
so their susceptibility is zero, \chi=0.
Hence, D matches with I.
Therefore, the correct matching is A-II, B-III, C-IV, D-I.