1. Two identical thin bar magnets each of length l and pole strength m are placed at right angle to each other with north pole of one touching south pole of the other. Magnetic moment of the system is

2.The small magnets each of magnetic moment 10 Am² are placed end-on position 0.1m apart from their centres. The force acting between them is 

3. The effective length of a magnet is 31.4 cm and its pole strength is 0.5 Am. The magnetic moment, if it is bent in the form of a semicircle will be 

4.At a certain place, the horizontal component of earth's magnetic field is 1.732 times the vertical component. The angle of dip at that place is     

5. A short magnet of moment 6.75 Am²   produces a neutral point on its axis. If horizontal component of earth's magnetic field is 5 x 10⁻⁵ Wb m⁻², then the distance of the neutral point should be

6. A magnetic needle is made to vibrate in uniform field H, then its time period is T. If it vibrates in the field of intensity 4H, its time period will be

7. Relative permeability of iron is 5500, then its magnetic susceptibility will be

8. When a piece of a ferromagnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is 

9. Among the following properties describing diamagnetism identify  the property that is wrongly stated

10. A cylindrical rod magnet has a length of 5 cm and a diameter of 1 cm. It has a uniform magnetisation of 5.30 x 10³ Amp m⁻³. What its magnetic dipole moment