Question 10
Four identical iron bars were dipped in a heap of iron filings one by one. Fig. shows the amount of iron filings sticking to each of them. (a) Which of the iron bar is likely to be the strongest magnet? (b) Which of the iron bars is not a magnet? Justify your answer.
An iron metal bar can be converted into a permanent magnet.
Describe an activity to show how an iron nail/ bar can be magnetized.
