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A paramagnetic material has 10 28 atoms/m 3 . Its magnetic susceptibility at temperature 350 K is 2.8 × 10 –4 . Its susceptibility at 300 K is :

1. 3.726 × 10 –4
2. 2.672 × 10 –4
3. 3.672 × 10 –4
4. 3.267 × 10 –4

Correct answer: 3.267 × 10 –4

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