Magnetic Properties of Materials

Which one of the following species is diamagnetic in nature?

A magnetic material filed in U-tube. When magnetic field is applied at one end of U-tube then level of magnetic material is changed in tube as shown in figure. The material in U-tube may be -

Area of $B-H$ hysteresis loop indicate

Curie temperature is the temperature above which

Meissner effect is strictly followed by

In superconductivity the conductivity of a material becomes

A frog can be levitated in magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as

Hysteresis loops for two magnetic materials $A$ and $B$ are given below:

These materials are used to make magnets for electric generators, transformer cores and electromagnet core. Then it is proper to use:

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

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-

Curie temperature is the temperature above which:

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 :-