The susceptibility of tungsten is $6 \cdot 8 \times 10^{-5}$ at temperature $300 \mathrm{~K}$. The…

The susceptibility of tungsten is $6 \cdot 8 \times 10^{-5}$ at temperature $300 \mathrm{~K}$. The susceptibility at temperature $400 \mathrm{~K}$ is
  1. $5 \cdot 1 \times 10^{-5}$
  2. $6 \cdot 8 \times 10^{-5}$
  3. $3 \cdot 4 \times 10^{-5}$
  4. $4 \cdot 8 \times 10^{-5}$

Solution

Using $\chi_2=\chi_1 \cdot \frac{T_1}{T_2}$ : $\chi_2=6.8 \times 10^{-5} \cdot \frac{300}{400}=5.1 \times 10^{-5}$

Asked in: MHT CET 2020 (12 Oct Shift 2)

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