Question

Take a needle or nail. Place it steady on a table. Keep on rubbing a magnet over it from one end to the other. Do this 7-8 times. Now take a few pins near that needle/nail. What is seen?

In this way, magnetic objects acquire magnetism. Magnetism of this kind is temporary. It lasts for a short while.

Answer 1

When the magnet is rubbed over the needle or nail from one end to the other 7–8 times, the needle or nail becomes magnetised. When a few pins are brought near it, the pins are attracted towards the needle or nail and stick to it.

This shows that a magnetic object such as a needle or nail can acquire magnetism by rubbing it with a magnet. However, the magnetism produced in this way is temporary and lasts only for a short time.