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(A): The spins within a magnetic domain are aligned permanently below Curie temperature in a ferromagnetic material.
(R): Ferromagnetic material is magnetic only when the domains are aligned by an external field.
  • a)
    Both A and R are true and R is a correct explanation of A
  • b)
    Both A and R are true but R is not a correct explanation of A
  • c)
    A is true but R is false
  • d)
    A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
(A): The spins within a magnetic domain are aligned permanently below ...
  • A magnetic domain is a region within a ferromagnetic material where the atomic spins are aligned in the same direction, creating a localized magnetic field. Below the Curie temperature, ferromagnetic materials are indeed permanently magnetized, and the spins within the magnetic domains remain aligned without an external magnetic field (A).
  • The explanation (R) is incorrect. Ferromagnetic materials are not magnetic only when the domains are aligned by an external field. Instead, they exhibit spontaneous magnetization below the Curie temperature due to the inherent alignment of the spins within the magnetic domains. Once the domains are aligned, they remain aligned even after the external magnetic field is removed, creating a permanent magnet.
  • Since A is true, and R is false as it does not correctly explain the behavior of ferromagnetic materials, the correct answer is C.
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(A): The spins within a magnetic domain are aligned permanently below Curie temperature in a ferromagnetic material.(R): Ferromagnetic material is magnetic only when the domains are aligned by an external field.a)Both A and R are true and R is a correct explanation of Ab)Both A and R are true but R is not a correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
Question Description
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