Question

The magnetic susceptibility is always negative in:

• A. Paramagnetic material
• B. Diamagnetic material
• C. Ferromagnetic material
• D. Antiferromagnetic material

Hint:

Diamagnetic susceptibility is negative, while paramagnetic and ferromagnetic susceptibilities are positive.

Answer 1

The Correct Option is B

Concept:
Magnetic susceptibility \(\chi\) measures how a material responds to an applied magnetic field.

Step 1: Diamagnetic materials.
Diamagnetic materials are weakly repelled by magnetic fields. \[ \chi<0 \]

Step 2: Paramagnetic materials.
Paramagnetic materials have small positive susceptibility. \[ \chi>0 \]

Step 3: Ferromagnetic materials.
Ferromagnetic materials have large positive susceptibility.

Step 4: Final answer.
Since diamagnetic materials have negative susceptibility: \[ \therefore \text{Correct Answer is (B)} \]