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To demagnetise a magnet using the heating method. Which of the following is the correct step?(A) Heat the magnet to become red hot and allow it to cool in the east-west direction. (B) Heat the magnet to become red hot, and allow it to cool in the north-south direction(C) Heat the magnet in boiling water and allow it to cool in the north - south direction (D) Both A and B
To demagnetize a magnet using the heating method.
We have to:
(A) Heat the magnet to become red hot and allow it to cool in the east-west direction.
This is because earths magnetic field is along North-South direction. If placed along north-south, there is a chance that the object can become magnetized again
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