A thin rod `30 cm` long is uniformly magnetised and its period of oscillation is `4 s`. It is broken into three equal parts normal to its length. The period of oscillation of each part is

A thin magnetic iron rod of length 30 cm is suspended in a uniform magnetic field. Its time period of oscillation is 4s. It is broken into three equal parts. The time period in second of oscillation of one part. When suspended in the same magnetic field, is

A thin magnetic iron rod of length 30 cm is suspended in a uniform magnetic field. Its time period of oscillation is 4 s. It is broken into three equal parts, The time period in second of oscillation of one part when suspended in the same magnetic field is

An iron rod whose length is 20 cm and radius is 2 cm is uniformly magnetised and its period of oscillation is 4 s. It is broken into four parts. Find the time period of each part.

A thin rectangular magnet suspnded freely has a period of oscillation of 4s . If it is broken into one of the pieces is suspened similarly . The period of its oscillation will be

A thin iron rod is cut into 10 equal parts parallel to its length. The intensity of magnetisation of each piece will be…..

A thin magnetic needle oscillates in the horizontal plane with a time period of 2.0 sec. If the needle is broken into 4 equal parts perpendicular to its length, then the time period of each part will be: