Magnetism and Matter
Derive an expression for the magnetic field intensity at any point on the axial line of a bar magnet. Also, write the condition for a short bar magnet.
Differentiate between Diamagnetic, Paramagnetic, and Ferromagnetic substances on the basis of their magnetic properties, susceptibility, and behavior in a non-uniform magnetic field.
Differentiate between diamagnetic, paramagnetic, and ferromagnetic substances on the basis of their magnetic properties, susceptibility, and effect of temperature.
Differentiate between Diamagnetic, Paramagnetic, and Ferromagnetic substances on the basis of their magnetic properties. Give at least five points of distinction and provide two examples for each.
Define the intensity of magnetic field (magnetic field strength) on the axial line of a bar magnet. Derive an expression for the magnetic field at a point situated at a distance $d$ along its axial line. Also, calculate the magnetic field intensity at a distance of 0.1 m from the center of a short bar magnet having a magnetic dipole moment of $0.4 , \text{A}\cdot\text{m}^2$ along its axial line.