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Magnetism and Matter

154294 The relative magnetic permeability of a medium is 0.075 . What is its magnetic susceptibility?

1 +0.925

2 1.075

3 -0.925

4 -1.075

Explanation:

C Relative permeability $(μ_{r}) = 0.075$
$χ_{m} = μ_{r} - 1$
$= 0.075 - 1$
$χ_{m} = - 0.925$

MHT-CET 2020

Magnetism and Matter

154299 Magnetization of the sample is

1 Volume of the sample per unit magnetic dipole moment

2 ratio of pole strength to magnetic dipole moment

3 ratio of magnetic dipole moment and pole strength

4 net magnetic dipole moment per unit volume

Explanation:

D Magnetisation of a sample is defined as the magnetic moment per unit volume of the sample.
It is represented by $M$ .
And, magnetisation of sample is given by-
$M = \frac{μ}{V}$
Note-SI unit for it $\to {Am}^{- 1}$ .

MHT-CET 2020

Magnetism and Matter

154301 The product of magnetic susceptibility $(χ)$ and absolute temperature $(T)$ is constant for a

1 diamagnetic and ferromagnetic material

2 paramagnetic material

3 ferromagnetic material

4 diamagnetic material

Explanation:

B The susceptibility of paramagnetic substance is inversely proportional to absolute temperature.
$χ \propto \frac{1}{T}$
$χ T = Constant$
Note- The susceptibility is positive and small for paramagnetic materials.

MHT-CET 2020

Magnetism and Matter

154312 Three thin wires ' $A$ ', 'B' and ' $C$ ' are respectively made up of ferromagnetic, paramagnetic and diamagnetic materials. When a magnet is brought near the wires, which one of the following statements is TRUE about the attraction and repulsion of the wires?

1 'A' will be attracted strongly, '

B

' will be attracted somewhat less than '

A

' and '

C

' will be repelled.

2 All 'A', 'B' and '

C

' are attracted.

3 '

B

' will be attracted and '

A

', 'C' will be repelled.

4 'A' will be attracted strongly and 'B', '

C

' will be repelled.

Explanation:

A Given,
$A =$ ferromagnetic
$B =$ paramagnetic
$C =$ diamagnetic
When its material brought close to the magnet then
A will attracted strongly
B will be attracted less than A and
C will be repelled

MHT-CET 2020

Magnetism and Matter

154314 The relative magnetic permeability $(μ_{r})$ of a substance is related to its susceptibility $(χ)$ as

1

μ_{r} = 1 - χ

2

μ_{r} = 1 + χ

3

μ_{r} = 1 + χ^{2}

4

μ_{r} = 1 - χ^{2}

Explanation:

B The permeability of the material given by
$μ = μ_{0} (1 + χ)$
$\frac{μ}{μ_{0}} = (1 + χ)$
$μ_{r} = (1 + χ)$

MHT-CET 2020

Magnetism and Matter

154294 The relative magnetic permeability of a medium is 0.075 . What is its magnetic susceptibility?

1 +0.925

2 1.075

3 -0.925

4 -1.075

Explanation:

C Relative permeability $(μ_{r}) = 0.075$
$χ_{m} = μ_{r} - 1$
$= 0.075 - 1$
$χ_{m} = - 0.925$

MHT-CET 2020

Magnetism and Matter

154299 Magnetization of the sample is

1 Volume of the sample per unit magnetic dipole moment

2 ratio of pole strength to magnetic dipole moment

3 ratio of magnetic dipole moment and pole strength

4 net magnetic dipole moment per unit volume

Explanation:

D Magnetisation of a sample is defined as the magnetic moment per unit volume of the sample.
It is represented by $M$ .
And, magnetisation of sample is given by-
$M = \frac{μ}{V}$
Note-SI unit for it $\to {Am}^{- 1}$ .

MHT-CET 2020

Magnetism and Matter

154301 The product of magnetic susceptibility $(χ)$ and absolute temperature $(T)$ is constant for a

1 diamagnetic and ferromagnetic material

2 paramagnetic material

3 ferromagnetic material

4 diamagnetic material

Explanation:

B The susceptibility of paramagnetic substance is inversely proportional to absolute temperature.
$χ \propto \frac{1}{T}$
$χ T = Constant$
Note- The susceptibility is positive and small for paramagnetic materials.

MHT-CET 2020

Magnetism and Matter

154312 Three thin wires ' $A$ ', 'B' and ' $C$ ' are respectively made up of ferromagnetic, paramagnetic and diamagnetic materials. When a magnet is brought near the wires, which one of the following statements is TRUE about the attraction and repulsion of the wires?

1 'A' will be attracted strongly, '

B

' will be attracted somewhat less than '

A

' and '

C

' will be repelled.

2 All 'A', 'B' and '

C

' are attracted.

3 '

B

' will be attracted and '

A

', 'C' will be repelled.

4 'A' will be attracted strongly and 'B', '

C

' will be repelled.

Explanation:

A Given,
$A =$ ferromagnetic
$B =$ paramagnetic
$C =$ diamagnetic
When its material brought close to the magnet then
A will attracted strongly
B will be attracted less than A and
C will be repelled

MHT-CET 2020

Magnetism and Matter

154314 The relative magnetic permeability $(μ_{r})$ of a substance is related to its susceptibility $(χ)$ as

1

μ_{r} = 1 - χ

2

μ_{r} = 1 + χ

3

μ_{r} = 1 + χ^{2}

4

μ_{r} = 1 - χ^{2}

Explanation:

B The permeability of the material given by
$μ = μ_{0} (1 + χ)$
$\frac{μ}{μ_{0}} = (1 + χ)$
$μ_{r} = (1 + χ)$

MHT-CET 2020

Magnetism and Matter

154294 The relative magnetic permeability of a medium is 0.075 . What is its magnetic susceptibility?

1 +0.925

2 1.075

3 -0.925

4 -1.075

Explanation:

C Relative permeability $(μ_{r}) = 0.075$
$χ_{m} = μ_{r} - 1$
$= 0.075 - 1$
$χ_{m} = - 0.925$

MHT-CET 2020

Magnetism and Matter

154299 Magnetization of the sample is

1 Volume of the sample per unit magnetic dipole moment

2 ratio of pole strength to magnetic dipole moment

3 ratio of magnetic dipole moment and pole strength

4 net magnetic dipole moment per unit volume

Explanation:

D Magnetisation of a sample is defined as the magnetic moment per unit volume of the sample.
It is represented by $M$ .
And, magnetisation of sample is given by-
$M = \frac{μ}{V}$
Note-SI unit for it $\to {Am}^{- 1}$ .

MHT-CET 2020

Magnetism and Matter

154301 The product of magnetic susceptibility $(χ)$ and absolute temperature $(T)$ is constant for a

1 diamagnetic and ferromagnetic material

2 paramagnetic material

3 ferromagnetic material

4 diamagnetic material

Explanation:

B The susceptibility of paramagnetic substance is inversely proportional to absolute temperature.
$χ \propto \frac{1}{T}$
$χ T = Constant$
Note- The susceptibility is positive and small for paramagnetic materials.

MHT-CET 2020

Magnetism and Matter

154312 Three thin wires ' $A$ ', 'B' and ' $C$ ' are respectively made up of ferromagnetic, paramagnetic and diamagnetic materials. When a magnet is brought near the wires, which one of the following statements is TRUE about the attraction and repulsion of the wires?

1 'A' will be attracted strongly, '

B

' will be attracted somewhat less than '

A

' and '

C

' will be repelled.

2 All 'A', 'B' and '

C

' are attracted.

3 '

B

' will be attracted and '

A

', 'C' will be repelled.

4 'A' will be attracted strongly and 'B', '

C

' will be repelled.

Explanation:

A Given,
$A =$ ferromagnetic
$B =$ paramagnetic
$C =$ diamagnetic
When its material brought close to the magnet then
A will attracted strongly
B will be attracted less than A and
C will be repelled

MHT-CET 2020

Magnetism and Matter

154314 The relative magnetic permeability $(μ_{r})$ of a substance is related to its susceptibility $(χ)$ as

1

μ_{r} = 1 - χ

2

μ_{r} = 1 + χ

3

μ_{r} = 1 + χ^{2}

4

μ_{r} = 1 - χ^{2}

Explanation:

B The permeability of the material given by
$μ = μ_{0} (1 + χ)$
$\frac{μ}{μ_{0}} = (1 + χ)$
$μ_{r} = (1 + χ)$

MHT-CET 2020

Magnetism and Matter

154294 The relative magnetic permeability of a medium is 0.075 . What is its magnetic susceptibility?

1 +0.925

2 1.075

3 -0.925

4 -1.075

Explanation:

C Relative permeability $(μ_{r}) = 0.075$
$χ_{m} = μ_{r} - 1$
$= 0.075 - 1$
$χ_{m} = - 0.925$

MHT-CET 2020

Magnetism and Matter

154299 Magnetization of the sample is

1 Volume of the sample per unit magnetic dipole moment

2 ratio of pole strength to magnetic dipole moment

3 ratio of magnetic dipole moment and pole strength

4 net magnetic dipole moment per unit volume

Explanation:

D Magnetisation of a sample is defined as the magnetic moment per unit volume of the sample.
It is represented by $M$ .
And, magnetisation of sample is given by-
$M = \frac{μ}{V}$
Note-SI unit for it $\to {Am}^{- 1}$ .

MHT-CET 2020

Magnetism and Matter

154301 The product of magnetic susceptibility $(χ)$ and absolute temperature $(T)$ is constant for a

1 diamagnetic and ferromagnetic material

2 paramagnetic material

3 ferromagnetic material

4 diamagnetic material

Explanation:

B The susceptibility of paramagnetic substance is inversely proportional to absolute temperature.
$χ \propto \frac{1}{T}$
$χ T = Constant$
Note- The susceptibility is positive and small for paramagnetic materials.

MHT-CET 2020

Magnetism and Matter

154312 Three thin wires ' $A$ ', 'B' and ' $C$ ' are respectively made up of ferromagnetic, paramagnetic and diamagnetic materials. When a magnet is brought near the wires, which one of the following statements is TRUE about the attraction and repulsion of the wires?

1 'A' will be attracted strongly, '

B

' will be attracted somewhat less than '

A

' and '

C

' will be repelled.

2 All 'A', 'B' and '

C

' are attracted.

3 '

B

' will be attracted and '

A

', 'C' will be repelled.

4 'A' will be attracted strongly and 'B', '

C

' will be repelled.

Explanation:

A Given,
$A =$ ferromagnetic
$B =$ paramagnetic
$C =$ diamagnetic
When its material brought close to the magnet then
A will attracted strongly
B will be attracted less than A and
C will be repelled

MHT-CET 2020

Magnetism and Matter

154314 The relative magnetic permeability $(μ_{r})$ of a substance is related to its susceptibility $(χ)$ as

1

μ_{r} = 1 - χ

2

μ_{r} = 1 + χ

3

μ_{r} = 1 + χ^{2}

4

μ_{r} = 1 - χ^{2}

Explanation:

B The permeability of the material given by
$μ = μ_{0} (1 + χ)$
$\frac{μ}{μ_{0}} = (1 + χ)$
$μ_{r} = (1 + χ)$

MHT-CET 2020

Magnetism and Matter

154294 The relative magnetic permeability of a medium is 0.075 . What is its magnetic susceptibility?

1 +0.925

2 1.075

3 -0.925

4 -1.075

Explanation:

C Relative permeability $(μ_{r}) = 0.075$
$χ_{m} = μ_{r} - 1$
$= 0.075 - 1$
$χ_{m} = - 0.925$

MHT-CET 2020

Magnetism and Matter

154299 Magnetization of the sample is

1 Volume of the sample per unit magnetic dipole moment

2 ratio of pole strength to magnetic dipole moment

3 ratio of magnetic dipole moment and pole strength

4 net magnetic dipole moment per unit volume

Explanation:

D Magnetisation of a sample is defined as the magnetic moment per unit volume of the sample.
It is represented by $M$ .
And, magnetisation of sample is given by-
$M = \frac{μ}{V}$
Note-SI unit for it $\to {Am}^{- 1}$ .

MHT-CET 2020

Magnetism and Matter

154301 The product of magnetic susceptibility $(χ)$ and absolute temperature $(T)$ is constant for a

1 diamagnetic and ferromagnetic material

2 paramagnetic material

3 ferromagnetic material

4 diamagnetic material

Explanation:

B The susceptibility of paramagnetic substance is inversely proportional to absolute temperature.
$χ \propto \frac{1}{T}$
$χ T = Constant$
Note- The susceptibility is positive and small for paramagnetic materials.

MHT-CET 2020

Magnetism and Matter

154312 Three thin wires ' $A$ ', 'B' and ' $C$ ' are respectively made up of ferromagnetic, paramagnetic and diamagnetic materials. When a magnet is brought near the wires, which one of the following statements is TRUE about the attraction and repulsion of the wires?

1 'A' will be attracted strongly, '

B

' will be attracted somewhat less than '

A

' and '

C

' will be repelled.

2 All 'A', 'B' and '

C

' are attracted.

3 '

B

' will be attracted and '

A

', 'C' will be repelled.

4 'A' will be attracted strongly and 'B', '

C

' will be repelled.

Explanation:

A Given,
$A =$ ferromagnetic
$B =$ paramagnetic
$C =$ diamagnetic
When its material brought close to the magnet then
A will attracted strongly
B will be attracted less than A and
C will be repelled

MHT-CET 2020

Magnetism and Matter

154314 The relative magnetic permeability $(μ_{r})$ of a substance is related to its susceptibility $(χ)$ as

1

μ_{r} = 1 - χ

2

μ_{r} = 1 + χ

3

μ_{r} = 1 + χ^{2}

4

μ_{r} = 1 - χ^{2}

Explanation:

B The permeability of the material given by
$μ = μ_{0} (1 + χ)$
$\frac{μ}{μ_{0}} = (1 + χ)$
$μ_{r} = (1 + χ)$

MHT-CET 2020

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