Demagnetisation of magnets can be done by [DPMT 1984; CBSE PMT 1988] – McqOptions

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1.	Demagnetisation of magnets can be done by [DPMT 1984; CBSE PMT 1988]
A.	Rough handling
B.	Heating
C.	Magnetising in the opposite direction
D.	All the above
Answer» E.

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