Q. Magnetic keepers are used to protect magnets from :

  • (A) Earth's magnetic field
  • (B) Effect of other magnets
  • (C) Self-demagnetization
  • (D) Demagnetization due to heating
βœ… Correct Answer: (C) Self-demagnetization
Explanation: Magnetic keepers are soft iron bars placed at either end of the pair of magnets. It is used to avoid self-demagnetisation of magnets.
Explanation by: Team MCQ Buddy
Magnetic keepers are soft iron bars placed at either end of the pair of magnets. It is used to avoid self-demagnetisation of magnets.

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