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STD 12 - 5. Magnetism and matter — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 5. Magnetism and matter4 Marks
MCQ
Statement $I :$ The ferromagnetic property depends on temperature. At high temperature, ferromagnet becomes paramagnet.

Statement $II :$ At high temperature, the domain wall area of a ferromagnetic substance increases.

In the light of the above statements, choose the most appropriate answer from the options given below :

  • ✓
    Statement $I$ is true but Statement $II$ is false
  • B
    Both Statement $I$ and Statement $II$ are true
  • C
    Both Statement $I$ and Statement $II$ are false
  • D
    Statement $I$ is false but Statement $II$ is true
✓

Answer

Correct option: A.
Statement $I$ is true but Statement $II$ is false
a
As temperature increases, domains disintegrate so ferromagnetism decreases and above curie temperature it become paramagnet.

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