Question:
The product of magnetic susceptibility (\(χ\)) and absolute temperature (T) is constant for a
The product of magnetic susceptibility (\(χ\)) and absolute temperature (T) is constant for a
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Curie law applies to paramagnetic substances.
Updated On: Oct 1, 2026
- diamagnetic substance.
- paramagnetic substance.
- ferromagnetic substance.
- paramagnetic as well as ferromagnetic substance.
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Curie's law for paramagnetic substances says the magnetic susceptibility is inversely proportional to absolute temperature: \(\chi=\dfrac CT\).
Step 2: Product:
So \(\chi T=C\), a constant. This is the Curie constant.
Step 3: Check the others:
Diamagnetic susceptibility is small, negative and almost independent of temperature. Ferromagnetic substances follow the Curie-Weiss law, \(\chi=\dfrac{C}{T-T_c}\), so \(\chi T\) is not constant. Hence (A), (C) and (D) are wrong.
Step 4: Choose:
Option (B).
Final Answer:
Curie law holds for paramagnetic substances. \[ \boxed{B:\ \text{paramagnetic substance}} \]
Curie's law for paramagnetic substances says the magnetic susceptibility is inversely proportional to absolute temperature: \(\chi=\dfrac CT\).
Step 2: Product:
So \(\chi T=C\), a constant. This is the Curie constant.
Step 3: Check the others:
Diamagnetic susceptibility is small, negative and almost independent of temperature. Ferromagnetic substances follow the Curie-Weiss law, \(\chi=\dfrac{C}{T-T_c}\), so \(\chi T\) is not constant. Hence (A), (C) and (D) are wrong.
Step 4: Choose:
Option (B).
Final Answer:
Curie law holds for paramagnetic substances. \[ \boxed{B:\ \text{paramagnetic substance}} \]
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