The time period of a bar magnet suspended horizontally in the earth's magnetic field and allowed to oscillate

In a vibration magnetometer, the time period of a bar magnet oscillating in horizontal componnt of earth's magnetic field is 2 sec . When a magnet is brought near and parallel to it, the time period reduces to 1 sec . The ratio H//F of the horizontal component H and the field F due to magnet will be

The time period of oscillation of a bar magnet suspended horizontaliy along the magnetic meridian is T_(0) . If this magnet is replaced by another magnet of the same size and pole strength but with double the mass, the new time period will be

The time period of oscillation of a bar magnet suspended horizontaliy along the magnetic meridian is T_(0) . If this magnet is replaced by another magnet of the same size and pole strength but with double the mass, the new time period will be

A bar magnet of length 'I' breadth 'b' mass 'm' suspended horizontally in the earths magnetic field, oscillates with period T . If 'I'm,b are doubled with pole strength remaining the same, the now will be

A magnet is suspended horizontal in the earth's magnetic field. When it is displaced and then released it oscillates in a horizontal plane with a period T. If a place of wood of the same moment of inertia (about the axis of rotation) as the magnet is attached to the magnet what would the new period of oscillation of the system become?

A magnet is suspended horizontal in the earth's magnetic field. When it is displaced and then released it oscillates in a horizontal plane with a period T. If a place of wood of the same moment of inertia (about the axis of rotation) as the magnet is attached to the magnet what would the new period of oscillation of the system become?