📊 Physics
Q. Which of the following is correct?
  • (A) Soft iron is a hard ferromagnetic material
  • (B) Alnico is a soft ferromagnetic material
  • (C) At high enough temperature, a ferromagnet becomes a paramagnet
  • (D) All of the above
✅ Correct Answer: (C) At high enough temperature, a ferromagnet becomes a paramagnet

Explanation: The ferromagnetic property depends on temperature. At high enough temperature, a ferromagnet becomes a paramagnet. Soft iron is a soft ferromagnetic material and Alnico is a hard ferromagnetic material.

Explanation by: Deepika
The ferromagnetic property depends on temperature. At high enough temperature, a ferromagnet becomes a paramagnet. Soft iron is a soft ferromagnetic material and Alnico is a hard ferromagnetic material.

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