Question

You have been given three beakers with a magnet in each. Pour iron filings in each
one of them and then pour very cold water in one, very hot water in the second
and no water in the third one. Which magnet will attract maximum amount of iron
filings? Justify your answer.​

Answer 1

Answer:

The strength of a magnet decreases on heating. So, the magnet in the hot water will be the weakest. The magnet kept in cold water will be slightly stronger than the magnet kept without water. So, the cold magnet will attract the maximum amount of the fillings .

Hope it will help you