Subject :NSO Class : Class 6
To demagnetise a magnet using the heating method, which of the following is the correct step?
AHeat the magnet to become red hot, and allow it to cool in the east west direction.
BHeat the magnet to become red hot, and allow it to cool in the north south direction.
CHeat the magnet in boiling water, and allow it to cool in the north south direction.
DBoth A and B
Ans 1:
Class : Class 7