A bar magnet is cut into two pieces. Then each of the new pieces is cut into two more pieces and the process is repeated one more time. Find out the number of the north poles thus generated.
8
First cut: 2 north and 2 South Poles.
Second cut: Each of the two pieces is cut into two more pieces.
So, 4 North Poles and 4 South Poles.
Third cut: Each of the 4 pieces is cut into two more pieces.
So, 8 North and 8 South Poles.