The magnet of a vibration magnetometer is heated so as to reduce its magnetic moment by `19%`. By doing this the period time of the magnetometer will

The magnet of vibration magnetometer is heated so as to reduce its magnetic moment by 36%. By doing this the periodic time of the magnetometer will

The magnet of vibration magnetometer is heated so as to reduce its magnetic moment by 36%. By doing this the periodic time of the magnetometer will

Time period in vibration magnetometer will be infinity at

The period of oscillation of a magnet in a vibration magnetometer is 8 seconds. The period of oscillation of magnet whose magnetic moment is four times that of the first magnet is :

For a vibration magnetometer, the time period of suspended bar magnet can be reduced by -