Q202. A thin bar magnet when suspended freely has a time period of 2 second. It is cut into two equal parts along the perpendicular bisector. The two parts are placed one over the other such that their dipole moments are pointing in the same direction. Now if this assembly is suspended freely its time period will be-
(1) 1 s
(2) 2 s
(3) 4 s
(4) 8 s