03. Magnetism, Magnetic Properties and Magnetisation
Magnetism and Matter

154304 A solenoid has core of a material with relative permeability 500 and its windings carry a current of $1 \mathrm{~A}$. The number of turns of the solenoid is $\mathbf{5 0 0}$ per meter. The magnetization of the material is.

1 $2.5 \times 10^{3} \mathrm{Am}^{-1}$
2 $2.5 \times 10^{5} \mathrm{Am}^{-1}$
3 $2.0 \times 10^{5} \mathrm{Am}^{-1}$
4 $2.0 \times 10^{3} \mathrm{Am}^{-1}$
Magnetism and Matter

154307 The variation of intensity of magnetization (I) and the applied magnetic field intensity $(\mathrm{H})$ for three magnetic materials ' $X$ ', ' $Y$ ' and ' $Z$ ' are shown in the graph as $\mathrm{OX}$, $\mathrm{OY}$ and $\mathrm{OZ}$ respectively.
The materials ' $\mathrm{X}$ ', ' $\mathrm{Y}$ ' and ' $\mathrm{Z}$ ' respectively are

1 ferromagnetic, diamagnetic, paramagnetic
2 diamagnetic, paramagnetic, ferromagnetic
3 paramagnetic, diamagnetic, ferromagnetic
4 diamagnetic, ferromagnetic, paramagnetic
Magnetism and Matter

154309 The magnetic susceptibility of a paramagnetic material at $-73^{\circ} \mathrm{C}$ is 0.0075 . It value at $-173^{\circ} \mathrm{C}$ will be

1 0.0045
2 0.0030
3 0.0150
4 0.0075
Magnetism and Matter

154311 Find the intensity of magnetization of a magnet of moment $4 \mathrm{Am}^{2}$ which weighs 50 gram. (Density of the material of a magnet $=\mathbf{5 0 0 0}$ $\left.\mathbf{~} \mathrm{g} / \mathrm{m}^{3}\right)$

1 $2 \times 10^{5} \mathrm{~A} / \mathrm{m}$
2 $4 \times 10^{5} \mathrm{~A} / \mathrm{m}$
3 $3 \times 10^{5} \mathrm{~A} / \mathrm{m}$
4 $10^{5} \mathrm{~A} / \mathrm{m}$
Magnetism and Matter

154313 There are three needles ' $\mathrm{N}_{1}$ ', ' $\mathrm{N}_{2}$ ' and ' $\mathrm{N}_{3}$ ', made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. When a magnet is brought close to them, then it will

1 attract $\mathrm{N}_{1}$ strongly, $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
2 attract $\mathrm{N}_{1}$ strongly and $\mathrm{N}_{2}$ weakly, repel $\mathrm{N}_{3}$ weakly.
3 attract $\mathrm{N}_{2}$ strongly, $\mathrm{N}_{1}$ and $\mathrm{N}_{3}$ weakly.
4 attract $\mathrm{N}_{1}$ strongly, repel $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
Magnetism and Matter

154304 A solenoid has core of a material with relative permeability 500 and its windings carry a current of $1 \mathrm{~A}$. The number of turns of the solenoid is $\mathbf{5 0 0}$ per meter. The magnetization of the material is.

1 $2.5 \times 10^{3} \mathrm{Am}^{-1}$
2 $2.5 \times 10^{5} \mathrm{Am}^{-1}$
3 $2.0 \times 10^{5} \mathrm{Am}^{-1}$
4 $2.0 \times 10^{3} \mathrm{Am}^{-1}$
Magnetism and Matter

154307 The variation of intensity of magnetization (I) and the applied magnetic field intensity $(\mathrm{H})$ for three magnetic materials ' $X$ ', ' $Y$ ' and ' $Z$ ' are shown in the graph as $\mathrm{OX}$, $\mathrm{OY}$ and $\mathrm{OZ}$ respectively.
The materials ' $\mathrm{X}$ ', ' $\mathrm{Y}$ ' and ' $\mathrm{Z}$ ' respectively are

1 ferromagnetic, diamagnetic, paramagnetic
2 diamagnetic, paramagnetic, ferromagnetic
3 paramagnetic, diamagnetic, ferromagnetic
4 diamagnetic, ferromagnetic, paramagnetic
Magnetism and Matter

154309 The magnetic susceptibility of a paramagnetic material at $-73^{\circ} \mathrm{C}$ is 0.0075 . It value at $-173^{\circ} \mathrm{C}$ will be

1 0.0045
2 0.0030
3 0.0150
4 0.0075
Magnetism and Matter

154311 Find the intensity of magnetization of a magnet of moment $4 \mathrm{Am}^{2}$ which weighs 50 gram. (Density of the material of a magnet $=\mathbf{5 0 0 0}$ $\left.\mathbf{~} \mathrm{g} / \mathrm{m}^{3}\right)$

1 $2 \times 10^{5} \mathrm{~A} / \mathrm{m}$
2 $4 \times 10^{5} \mathrm{~A} / \mathrm{m}$
3 $3 \times 10^{5} \mathrm{~A} / \mathrm{m}$
4 $10^{5} \mathrm{~A} / \mathrm{m}$
Magnetism and Matter

154313 There are three needles ' $\mathrm{N}_{1}$ ', ' $\mathrm{N}_{2}$ ' and ' $\mathrm{N}_{3}$ ', made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. When a magnet is brought close to them, then it will

1 attract $\mathrm{N}_{1}$ strongly, $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
2 attract $\mathrm{N}_{1}$ strongly and $\mathrm{N}_{2}$ weakly, repel $\mathrm{N}_{3}$ weakly.
3 attract $\mathrm{N}_{2}$ strongly, $\mathrm{N}_{1}$ and $\mathrm{N}_{3}$ weakly.
4 attract $\mathrm{N}_{1}$ strongly, repel $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
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Magnetism and Matter

154304 A solenoid has core of a material with relative permeability 500 and its windings carry a current of $1 \mathrm{~A}$. The number of turns of the solenoid is $\mathbf{5 0 0}$ per meter. The magnetization of the material is.

1 $2.5 \times 10^{3} \mathrm{Am}^{-1}$
2 $2.5 \times 10^{5} \mathrm{Am}^{-1}$
3 $2.0 \times 10^{5} \mathrm{Am}^{-1}$
4 $2.0 \times 10^{3} \mathrm{Am}^{-1}$
Magnetism and Matter

154307 The variation of intensity of magnetization (I) and the applied magnetic field intensity $(\mathrm{H})$ for three magnetic materials ' $X$ ', ' $Y$ ' and ' $Z$ ' are shown in the graph as $\mathrm{OX}$, $\mathrm{OY}$ and $\mathrm{OZ}$ respectively.
The materials ' $\mathrm{X}$ ', ' $\mathrm{Y}$ ' and ' $\mathrm{Z}$ ' respectively are

1 ferromagnetic, diamagnetic, paramagnetic
2 diamagnetic, paramagnetic, ferromagnetic
3 paramagnetic, diamagnetic, ferromagnetic
4 diamagnetic, ferromagnetic, paramagnetic
Magnetism and Matter

154309 The magnetic susceptibility of a paramagnetic material at $-73^{\circ} \mathrm{C}$ is 0.0075 . It value at $-173^{\circ} \mathrm{C}$ will be

1 0.0045
2 0.0030
3 0.0150
4 0.0075
Magnetism and Matter

154311 Find the intensity of magnetization of a magnet of moment $4 \mathrm{Am}^{2}$ which weighs 50 gram. (Density of the material of a magnet $=\mathbf{5 0 0 0}$ $\left.\mathbf{~} \mathrm{g} / \mathrm{m}^{3}\right)$

1 $2 \times 10^{5} \mathrm{~A} / \mathrm{m}$
2 $4 \times 10^{5} \mathrm{~A} / \mathrm{m}$
3 $3 \times 10^{5} \mathrm{~A} / \mathrm{m}$
4 $10^{5} \mathrm{~A} / \mathrm{m}$
Magnetism and Matter

154313 There are three needles ' $\mathrm{N}_{1}$ ', ' $\mathrm{N}_{2}$ ' and ' $\mathrm{N}_{3}$ ', made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. When a magnet is brought close to them, then it will

1 attract $\mathrm{N}_{1}$ strongly, $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
2 attract $\mathrm{N}_{1}$ strongly and $\mathrm{N}_{2}$ weakly, repel $\mathrm{N}_{3}$ weakly.
3 attract $\mathrm{N}_{2}$ strongly, $\mathrm{N}_{1}$ and $\mathrm{N}_{3}$ weakly.
4 attract $\mathrm{N}_{1}$ strongly, repel $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
Magnetism and Matter

154304 A solenoid has core of a material with relative permeability 500 and its windings carry a current of $1 \mathrm{~A}$. The number of turns of the solenoid is $\mathbf{5 0 0}$ per meter. The magnetization of the material is.

1 $2.5 \times 10^{3} \mathrm{Am}^{-1}$
2 $2.5 \times 10^{5} \mathrm{Am}^{-1}$
3 $2.0 \times 10^{5} \mathrm{Am}^{-1}$
4 $2.0 \times 10^{3} \mathrm{Am}^{-1}$
Magnetism and Matter

154307 The variation of intensity of magnetization (I) and the applied magnetic field intensity $(\mathrm{H})$ for three magnetic materials ' $X$ ', ' $Y$ ' and ' $Z$ ' are shown in the graph as $\mathrm{OX}$, $\mathrm{OY}$ and $\mathrm{OZ}$ respectively.
The materials ' $\mathrm{X}$ ', ' $\mathrm{Y}$ ' and ' $\mathrm{Z}$ ' respectively are

1 ferromagnetic, diamagnetic, paramagnetic
2 diamagnetic, paramagnetic, ferromagnetic
3 paramagnetic, diamagnetic, ferromagnetic
4 diamagnetic, ferromagnetic, paramagnetic
Magnetism and Matter

154309 The magnetic susceptibility of a paramagnetic material at $-73^{\circ} \mathrm{C}$ is 0.0075 . It value at $-173^{\circ} \mathrm{C}$ will be

1 0.0045
2 0.0030
3 0.0150
4 0.0075
Magnetism and Matter

154311 Find the intensity of magnetization of a magnet of moment $4 \mathrm{Am}^{2}$ which weighs 50 gram. (Density of the material of a magnet $=\mathbf{5 0 0 0}$ $\left.\mathbf{~} \mathrm{g} / \mathrm{m}^{3}\right)$

1 $2 \times 10^{5} \mathrm{~A} / \mathrm{m}$
2 $4 \times 10^{5} \mathrm{~A} / \mathrm{m}$
3 $3 \times 10^{5} \mathrm{~A} / \mathrm{m}$
4 $10^{5} \mathrm{~A} / \mathrm{m}$
Magnetism and Matter

154313 There are three needles ' $\mathrm{N}_{1}$ ', ' $\mathrm{N}_{2}$ ' and ' $\mathrm{N}_{3}$ ', made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. When a magnet is brought close to them, then it will

1 attract $\mathrm{N}_{1}$ strongly, $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
2 attract $\mathrm{N}_{1}$ strongly and $\mathrm{N}_{2}$ weakly, repel $\mathrm{N}_{3}$ weakly.
3 attract $\mathrm{N}_{2}$ strongly, $\mathrm{N}_{1}$ and $\mathrm{N}_{3}$ weakly.
4 attract $\mathrm{N}_{1}$ strongly, repel $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
Magnetism and Matter

154304 A solenoid has core of a material with relative permeability 500 and its windings carry a current of $1 \mathrm{~A}$. The number of turns of the solenoid is $\mathbf{5 0 0}$ per meter. The magnetization of the material is.

1 $2.5 \times 10^{3} \mathrm{Am}^{-1}$
2 $2.5 \times 10^{5} \mathrm{Am}^{-1}$
3 $2.0 \times 10^{5} \mathrm{Am}^{-1}$
4 $2.0 \times 10^{3} \mathrm{Am}^{-1}$
Magnetism and Matter

154307 The variation of intensity of magnetization (I) and the applied magnetic field intensity $(\mathrm{H})$ for three magnetic materials ' $X$ ', ' $Y$ ' and ' $Z$ ' are shown in the graph as $\mathrm{OX}$, $\mathrm{OY}$ and $\mathrm{OZ}$ respectively.
The materials ' $\mathrm{X}$ ', ' $\mathrm{Y}$ ' and ' $\mathrm{Z}$ ' respectively are

1 ferromagnetic, diamagnetic, paramagnetic
2 diamagnetic, paramagnetic, ferromagnetic
3 paramagnetic, diamagnetic, ferromagnetic
4 diamagnetic, ferromagnetic, paramagnetic
Magnetism and Matter

154309 The magnetic susceptibility of a paramagnetic material at $-73^{\circ} \mathrm{C}$ is 0.0075 . It value at $-173^{\circ} \mathrm{C}$ will be

1 0.0045
2 0.0030
3 0.0150
4 0.0075
Magnetism and Matter

154311 Find the intensity of magnetization of a magnet of moment $4 \mathrm{Am}^{2}$ which weighs 50 gram. (Density of the material of a magnet $=\mathbf{5 0 0 0}$ $\left.\mathbf{~} \mathrm{g} / \mathrm{m}^{3}\right)$

1 $2 \times 10^{5} \mathrm{~A} / \mathrm{m}$
2 $4 \times 10^{5} \mathrm{~A} / \mathrm{m}$
3 $3 \times 10^{5} \mathrm{~A} / \mathrm{m}$
4 $10^{5} \mathrm{~A} / \mathrm{m}$
Magnetism and Matter

154313 There are three needles ' $\mathrm{N}_{1}$ ', ' $\mathrm{N}_{2}$ ' and ' $\mathrm{N}_{3}$ ', made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. When a magnet is brought close to them, then it will

1 attract $\mathrm{N}_{1}$ strongly, $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.
2 attract $\mathrm{N}_{1}$ strongly and $\mathrm{N}_{2}$ weakly, repel $\mathrm{N}_{3}$ weakly.
3 attract $\mathrm{N}_{2}$ strongly, $\mathrm{N}_{1}$ and $\mathrm{N}_{3}$ weakly.
4 attract $\mathrm{N}_{1}$ strongly, repel $\mathrm{N}_{2}$ and $\mathrm{N}_{3}$ weakly.