Question

difference between hard and soft materials​

Answer 1

Materials which retain their magnetism and are difficult to demagnetize are called hardmagnetic  materials. These materials retain their magnetism even after the removal of the applied magnetic field. In permanent magnets the movement of the domain wall is prevented .

Answer 2

hard materials -The material which is rough to touch is called hard material
soft materials -The material which is smooth to touch is called soft material
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