Magnetic Properties of Matter — JEE Main PYQs

Two short bar magnets of length 1 cm each have magnetic moments $1.20{\mathrm{Am}}^2$ and $1.00{\mathrm{Am}}^2$ respectively. They are placed on a horizontal table parallel to each other with their N poles pointing towards the South. They have a common magnetic equator and are …

Relative permittivity and permeability of a material are ${\epsilon }_{\mathrm{r}}$ and ${\mu }_{\mathrm{r}}$, respectively. Which of the following values of these quantities are allowed for a diamagnetic material?

Needles ${\mathrm{N}}_1$, ${\mathrm{N}}_2$ and ${\mathrm{N}}_3$ are made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will

A magnetic needle is kept in a non-uniform magnetic field. It experiences

The length of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer is 2 s. The magnet is cut along its length into three equal parts and three parts are then placed on each other with their like poles together. The ti …

The materials suitable for making electromagnets should have