Raju was rubbing an iron needle on a magnet. the iron needle got magnetized. what judgement can you make about property of magnet
Answers
Answer:
As long as a metal has some iron in it, you can magnetize it using another magnetic metal or an electromagnet. While you need a strong magnet to make another metal magnetic, the magnetism produce will probably not be very strong; it will be sufficient to pick up a paperclip or a screw.
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Answer:
Repulsion is the surest test of magnetism. Because a magnet can attract a magnet as well as another magnetic substance but it can only repel a magnet, not any magnetic substance. Hence, if one end of iron bar is repelled by the north pole of a bar magnet then it's surely a magnet.
If both ends of the bar are attracted by the north pole that means it is just a magnetic material. Because if it would have been a magnet, then the north pole of the magnet would have repelled one of the ends of the iron bar.