Question

Regarding the magnetic property, the TRUE statement is

• A. Ag and Al have permanent dipole moment
• B. Magnetic susceptibility of Ag and Pb is small and negative
• C. Magnetic susceptibility of Al and Pb is small and negative
• D. Al and Pb have the tendency to move from weak to strong field
• E. Relative permeability of Ag and Al is greater than one

Hint:

Physics Tip: Diamagnetic $\chi<0$, Paramagnetic $\chi>0$. This sign alone solves many MCQs instantly.

Answer 1

The Correct Option is B

Concept:
- Diamagnetic substances: susceptibility small and negative. - Paramagnetic substances: susceptibility small and positive. - Diamagnetic materials move from strong field to weak field.
Step 1: Identify materials.
- Silver (Ag) is diamagnetic. - Lead (Pb) is diamagnetic. - Aluminium (Al) is paramagnetic.
Step 2: Check options.
(A) False — no permanent dipole moment.
(B) True — Ag and Pb have small negative susceptibility.
(C) False — Al is paramagnetic.
(D) False — Pb is diamagnetic, not toward strong field.
(E) False — Ag has relative permeability slightly less than 1.
Hence correct statement is Option (B). :contentReference[oaicite:1]{index=1}