Question:
Which of the following materials has positive and small value of magnetic susceptibility?
Which of the following materials has positive and small value of magnetic susceptibility?
Show Hint
Paramagnetic substances always have weak attraction toward magnetic fields.
Updated On: Jul 2, 2026
- Cu
- Al
- Bi
- Ni
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Magnetic susceptibility ($\chi$) indicates the extent to which a material gets magnetized in an external magnetic field.
- Diamagnetic materials: $\chi < 0$ (small negative)
- Paramagnetic materials: $\chi > 0$ (small positive)
- Ferromagnetic materials: $\chi \gg 0$ (large positive)
Step 1: Analyze each option - Cu (Copper): Diamagnetic → small negative susceptibility - Al (Aluminium): Paramagnetic → small positive susceptibility - Bi (Bismuth): Strongly diamagnetic → negative susceptibility - Ni (Nickel): Ferromagnetic → large positive susceptibility
Step 2: Identify correct material Only Aluminium has a small positive value of susceptibility. Final Answer: \[ \boxed{(B)} \]
Step 1: Analyze each option - Cu (Copper): Diamagnetic → small negative susceptibility - Al (Aluminium): Paramagnetic → small positive susceptibility - Bi (Bismuth): Strongly diamagnetic → negative susceptibility - Ni (Nickel): Ferromagnetic → large positive susceptibility
Step 2: Identify correct material Only Aluminium has a small positive value of susceptibility. Final Answer: \[ \boxed{(B)} \]
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