alleryFerromagnets keeping their magnetisation afterwards are called:
AHard magnetic
BSoft magnetic
CWeak magnetic
DFree magnetic
Answer & Solution
Correct answer: A. Hard magnetic
1. In some ferromagnets the magnetisation stays after the field goes.
2. These are called hard magnetic materials, or hard ferromagnets.
3. Materials losing it at once are the soft ones instead.
_Source: syllabus Physics Part I, Chapter 5, Magnetism and Matter._
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