Q4 of 20 Page 79

North Pole of a magnet can be identified by

It will be easy for us to identify the north pole of a magnet (1) with the help of another magnet (2) whose North Pole & South Pole are marked as if we bring North pole of the magnet (2) to the poles of magnet (1), then the pole which will repel is the North pole of magnet (1).

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2

The arrangement to store two magnets is shown by figures (a), (b), (c) and (d) in Fig. 13.2. Which one of them is the correct arrangement?

 3

Three magnets A, B and C were dipped one by one in a heap of iron filing. Fig. 13.3 shows the amount of the iron filing sticking to them.


The strength of these magnets will be

 5

A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filling clinging to the

 6

Fill in the blanks

(i) When a bar magnet is broken; each of the broken part will have ................ pole/poles.


(ii) In a bar magnet, magnetic attraction is ............... near its ends.