The temperature at which domains of the ferromagnetic substance disorient is:
Correct answer: C. Curie Temperature
- A. critical temperature
- B. absolute temperature
- C. Curie Temperature
- D. normal temperature
Explanation
Ferromagnetic MATERIALS can be permanently magnetized. Curie Temperature: The temperature at which the ferromagnetic element starts to lose its magnetism and becomes paramagnetic. Understanding the above-stated facts, option 'C' is the correct answer.
This question appeared on the ETEA MDCAT 2011 paper, which you can sit online with every answer explained.
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About Crystalline and Amorphous Solids
Crystalline solids have a regular, repeating lattice and a sharp melting point, while amorphous solids lack long-range order and soften over a temperature range. The topic covers unit cells, anisotropy, cleavage, symmetry and examples such as salts, metals, glass and plastics. Crystalline order must not be confused with mere hardness.
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