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Question

Suggest an activity to prepare a magnetic compass by using an iron needle and a bar magnet.

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Solution

You can prepare a magnetic compass through the following method:
1. Place one needle on a wooden table
2. Rub a magnet across the length of the needle without lifting the needle.
3. After you reach the end point of the needle, lift the magnet and again rub it in the same direction.
4. Remember to keep the same direction and repeat the steps.
5. Now place the needle on the cork in a vessel containing water.
6. The needle will shift and align itself in the 'North-South direction'.

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