Magnetic Properties of Matter

Choose the correct sketch of the magnetic field lines of a circular current loop shown by the dot $$ \text { and the cross } \otimes \text {. } $$

Assertion : Magnetic field is useful in producing parallel beam of charged particle. Reason : Magnetic field inhibits the motion of charged particle moving across it.

Match List-I with List-II. $\begin{array}{ll|rl} & \text{List-I} & & \begin{array}{l} \text{List-II} \\ \text{(Susceptibility } (\chi))\end{array} \\ \hline A. & \text{Diamagnetic} & I. & \chi=0 \\ B. &…

An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m-1. The permeability of the material of the rod is:$\mu$0=4$\pi$$\times$10−7 T m A−1

At a point A on the earth's surface the angle of dip, $\delta$=+25$^\circ$. At a point B on the earth's surface, the angle of dip, $\delta$=-25$^\circ$. We can interpret that:

If $\theta$1 and $\theta$2 be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip $\theta$ is given by

A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to: A. hold the sheet there if it is magnetic. B. hold the sheet there if it is non-magnetic. C. move the sheet away from…

The magnetic moment of an iron bar is $M$. It is now bent in such a way that it forms an arc section of a circle subtending an angle of $60^{\circ}$ at the centre. The magnetic moment of this arc section is

If the ratio of relative permeability and relative permittivity of a uniform medium is $1: 4$. The ratio of the magnitudes of electric field intensity $(E)$ to the magnetic field intensity $(H)$ of an EM wave…

The magnetic moment and moment of inertia of a magnetic needle as shown are, respectively, $1.0 \times 10^{-2} \mathrm{~A} \mathrm{~m}$ and $\frac{10^{-6}}{\pi^2} \mathrm{~kg} \mathrm{~m}^2$. If it completes 10…

The incorrect relation for a diamagnetic material (all the symbols carry their usual meaning and $\varepsilon$ is a small positive number) is

The variation of susceptibility $(\chi)$ with absolute temperature $(T)$ for a paramagnetic material is represented as: