Question

The figure schematically shows the M (magnetization) - H (magnetic field) plots for certain types of materials. Here M and H are plotted in the same scale and units. Which one of the following is the most appropriate combination? 

• A. (Q) - Paramagnet; (R) - Type-I Superconductor; (S) - Antiferromagnet
• B. (P) - Paramagnet; (Q) - Diamagnet; (R) - Type-I Superconductor
• C. (P) - Paramagnet; (Q) - Antiferromagnet; (R) - Type-I Superconductor
• D. (P) - Diamagnet; (Q) - Paramagnet; (R) - Type-I Superconductor

Hint:

Paramagnetic materials have positive susceptibility, diamagnetic materials have negative susceptibility, and Type-I superconductors exhibit perfect diamagnetism.

Answer 1

The Correct Option is B

- The given graph shows the magnetization (M) vs magnetic field (H) curves for different materials. Based on their characteristics:
- Paramagnetism (P) is characterized by a linear increase in M with increasing H.
- Diamagnetism (Q) shows a negative slope for M vs H, meaning the material gets weaker in magnetization as the external magnetic field increases.
- Type-I Superconductivity (R) shows a sharp drop in magnetization once the material reaches the superconducting state, which is consistent with the graph.
Thus, the correct answer is (B).