A defiection magnetometer works on

The deflection magnetometer is most sensitive when the defiection theta is

Two short magnet having magnetic moment in the ratio 27:8 , when placed on the opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is 0.12m from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is

A deflection magnetometer is placed with its arm along the east-west direction (tan A position) and a short bar magnet is placed symmetrically along its axis at some distance with its north pole pointing towards east. In this position the needle of the magnetometer shows a deflection of 60^(@) . If we double the distance of the bar magnet, then the deflection will be

In a deflection magnetometer which is adjusted in the usual way. When a magnet is introduced, the deflection observed is theta and the period of oscillation of the needle in the magnetometer is T . When the magnet is removed, the period of oscillation is T_(0) . The relation between T and T_(0) is

A deflection magnetometer is adjusted in the usual way . When a magnet is introduced , the deflection observed is theta = 60^(@) and the period of oscillation of the needle in magnetometer is T . When the magnet is removed the time period of oscillation is T_(0) . The relation between T and T_(0) is

In a deflection magnetometer, the needle is short and the pointer is long because, the

The arms of a deflection magnetometer in the tan B posittion are placed

The arms of a deflection magnetometer in tangent B position are placed along the

With a standard rectangular bar magnet the time period of a vibration magnetometer is 4 s. The bar magnet is cut parallel to its length into four equal pieces. The time period of vibration magnetometer when one piece is used (in second) (bar magnet breadth is small) is

A vibration magnetometer is placed at the south pole, then the time period will be