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प्रश्न
Four identical iron bars were dipped in a heap of iron filings one by one. Fig. 13.5 shows the amount of iron filings sticking to each of them.
Which of the iron bar is likely to be the strongest magnet?
उत्तर
Among the four given magnets, the Iron bar marked with (a) is the strongest magnet since many filings are attached to it.
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