Magnetic Effect...

In which case of comparing solenoid and bar magnet there is no exact similarity?

A bar magnet of magnetic moment 2.0 JT^-1 lies aligned with the direction of a uniform magnetic field of 0.25 T. What is the work done to turn the magnet so as to align its magnetic moment opposite to the field direction?

A paramagnetic substance of susceptibility 3 x 10^-4 is placed in a magnetic field of 4 x 10^-4 Am^-1. What is the intensity (in Am^-1) of magnetisation?

For a paramagnetic material, the dependence of magnetic susceptibility X on absolute temperature T is given by (C is a constant)

The relative permeability of iron is of the order 

Which of the following statements about bar magnets is correct ?

The magnetic susceptibility of a material of a rod is 449. Permeability of vacuum is 4π x 10^-7 henry/metre. The absolute permeability of the material of the rod (in henry/metre) is

If a bar magnet of pole strength q and magnetic moment m is divided into two equal pieces by cutting it perpendicular to its length, then

A small piece of a material is repelled by a strong magnet. The material is