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प्रश्न
How would you test whether a piece of steel was magnetised
(i) If you had a magnet?
(ii) If there was no magnet available.
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उत्तर
(i) If we had a magnet then we will bring the magnet near to steel, if there is a force of repulsion or attraction is experienced then steel was magnetized otherwise not.
(ii) We will hold the steel freely, if it points to north-south direction only then it is magnetized otherwise not.
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