Curie temperature is the temperature above which

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Navik GD Physics 22 March 2021 (Shift 3) Questions
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  1. A paramagnetic material becomes ferromagnetic 
  2. A ferromagnetic material becomes paramagnetic
  3. A paramagnetic material becomes diamagnetic
  4. A ferromagnetic material becomes diamagnetic

Answer (Detailed Solution Below)

Option 2 : A ferromagnetic material becomes paramagnetic
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Detailed Solution

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CONCEPT:

  • Curie temperature: Curie temperature is the temperature at which the magnetic properties of a material change. At this temperature, the magnetic materials lose their magnetic property.
    • When the temperature is greater than the Curie temperatureferromagnetic material becomes paramagnetic material.

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  • Diamagnetic Substance: Diamagnetic substances are those which develop feeble magnetization in the opposite direction of the magnetizing field.
  • Paramagnetic substances: Paramagnetic substances are those which develop feeble magnetization in the direction of the magnetizing field.
  • Ferromagnetic substances: Ferromagnetic substances are those which develop strong magnetization in the direction of the magnetizing field.

EXPLANATION:

  • The minimum temperature at which a ferromagnetic substance is converted into a paramagnetic substance is defined as Curie temperature.
  • At this temperature, the ferromagnetism of the substances suddenly vanishes.
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