If a bar magnet is cut lengthwise into two parts, how many numbers of poles will be formed?
Each magnet has a tiny north and south pole. If you cut one in half, the newly cut faces will become the new north or south poles of the smaller pieces. Hence, the total number of poles will be four.
A bar magnet is cut into three parts. How many north poles will we get?
The period of oscillation of a freely suspended long bar magnet is 4 seconds. If it is cut into two equal parts lengthwise, then the time period of each part will be