Magnetic Properties of Materials

Which one of the following species is diamagnetic in nature?

Meissner effect is strictly followed by

What is the Meissner effect?

In superconductivity the conductivity of a material becomes

The coils of a superconducting magnet are usually made of niobium _____ in a copper matrix.

In a superconductor, electricity will flow for a long time and then stop.

The hysteresis loss in soft magnetic materials must be kept ______

Which of the materials gets repelled by a magnetic field?

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

Magnetic moment of diamagnetic substances-

The relative permeability $\left({\mu }_r\right)$ of a ferromagnetic substance varies with temperature $\left(T\right)$ according to the curve,

Curie temperature is the temperature above which:

A ferromagnetic substance becomes paramagnetic substance when heated above curie temperature.

Substances, when placed in a magnetic field acquire feeble magnetisation in the direction opposite to that of the applied field are called

The relative permeability of a substance $X$ is slightly less than unity and that of substance $Y$ is slightly more than unity. Then,

Point out the best representation of relation between magnetic susceptibility $\left(X\right)$ and temperature $\left(T\right)$ for a paramagnetic material.

Needles $N_1,N_2$ and $N_3$ are made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet, when brought close to them, will

In a superconductor, critical magnetic field

The intensity of magnetisation $I$ is plotted against the magnetising field $H$ for different substances. The curves $A$ and $B$ shown in the adjoining figure are associated with :-

The $X-1/T$ graph for an alloy of paramagnetic nature is shown in figure. The Curie constant is