Question

why does a soft iron bar buried under the surface of the earth in north south direction acquires the properties of a magnet after sometime

Answer 1

hii.....
A soft iron bar buried under the surface of the earth in north south direction acquires the properties of a magnet after sometimes or some hours because under the earth magnatic meterial are found and as we know that if any soft iron bar make contact with magnetic particals it also change in magnet ......
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