A) \[200{}^\circ C\]
B) \[400{}^\circ C\]
C) \[600{}^\circ C\]
D) \[800{}^\circ C\]
Correct Answer: D
Solution :
The Curie temperature of iron is \[{{770}^{o}}C\], so the iron would become paramagnet at about \[{{800}^{o}}C\].
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