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Magnetic keepers are used to protect magnets from :
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- Earth’s magnetic field
- effect of other magnets
- self-demagnetization
- demagnetization due to heating
- Earth’s magnetic field
Correct Option: C
Magnets have a tendency to lose their magnetism when their poles are left bare. This is called selfdemagnetization. Magnets are, therefore, protected by keeping them in magnetic keepers.
