simon stroked 4 different nails with a bar magnet according to the direction of the arrows which nail will be magnetised
Answers
Solution:
Magnetic induction method.
We take a long iron nail and test it for magnetic properties by bringing near the magnetic substances. As we observe, nails don't attract magnetic substances. Now we bring a pole if a bar magnet near the head of the nail. Then we bring the iron paper clips near the pointed end of the nail and observe that the iron paper clips now get attracted towards the nail, this happens because iron nail becomes a magnet. Then we take the bar magnet away from the iron nail, paper clips fall off. This magnetism is temporary.
Single touch method.
We take a demagnetised piece of iron and place it on the surface of the table. Then we take a magnet and take one of the poles and rub it with the selected pole on the iron in one direction several times. Then after some time, the iron piece will turn into a magnet.