Curie temperature is the temperature by which
Correct answer: A. Ferromagnetic material changes to paramagnetic material
- A. Ferromagnetic material changes to paramagnetic material
- B. Paramagnetic material changes to ferromagnetic material
- C. Diamagnetic material changes to ferromagnetic material
- D. Ferromagnetic material changes to diamagnetic material
Explanation
The Curie temperature is the threshold at which a ferromagnetic material becomes paramagnetic. This is because, at higher temperatures, thermal energy overcomes the magnetic energy that aligns the spins in a ferromagnetic material. Option A is correct because it accurately describes this transition. Option B is incorrect because paramagnetic materials do not spontaneously become ferromagnetic at the Curie temperature. Option C is incorrect because diamagnetic materials have no relation to ferromagnetic properties in this context. Option D is incorrect because ferromagnetic materials do not transition to diamagnetic materials at any temperature.
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