NEETPhysicsMagnetic Properties of Matter
Match List-I with List-II regarding the magnetic susceptibility ( ) and relative permeability ( _r ) of various materials. List-I List-II (A) Superconductor (I) -1 (B) Diamagnetic material (II) = -1 and _r = 0 (C) Paramagnetic material (III) 1 and _r 1 (D) Ferromagnetic material (IV) 0 1 (where is a small positive number) Choose the correct answer from the options given below:
Options
- A(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
- B(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
- C(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
- D(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Correct answer
D. (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Step-by-step solution
Superconductors exhibit the Meissner effect, acting as perfect diamagnets, so = -1 and _r = 0 . Normal diamagnetic materials have a small negative susceptibility, so -1 Paramagnetic materials have a small positive susceptibility, so 0 1 . Ferromagnetic materials have a very large positive susceptibility, so 1 and _r 1 . Therefore, the correct matching is (A)-(II), (B)-(I), (C)-(IV), (D)-(III). Answer: (A)-(II), (B)-(I), (C)-(IV), (D)-(III)