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According to Curie-Weiss law

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AAI ATC Junior Executive 2015 Official Paper (Shift 2)
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  1. \(\chi = \dfrac{C}{T-\theta}\)
  2. \(\chi = \dfrac{C}{T+\theta}\)
  3. \(\chi = \dfrac{C}{\theta-T}\)
  4. \(\chi = \dfrac{C}{T\theta}\)

Answer (Detailed Solution Below)

Option 1 : \(\chi = \dfrac{C}{T-\theta}\)
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Detailed Solution

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Curie - Weiss law:

According to Curie - Weiss law, the susceptibility of a ferromagnetic material decreases above a certain temperature called curie temperature and it becomes paramagnetic in nature.

The susceptibility is given by

\(\Rightarrow \chi =\frac{C}{T-T_{C}}\)

Where,

C = Curie constant,

TC = Curie temperature,

T = Temperature

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