Magnetic Materials & Curie Law
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:
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Answer: (b)
- Statement I is true. A ferromagnet becomes paramagnetic above its Curie temperature.
- Statement II is false. At high temperature the domain structure is destroyed by thermal agitation. The domain wall area does not increase.
- So the answer is (b): Statement I is true but Statement II is false.