03. Magnetism, Magnetic Properties and Magnetisation
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Magnetism and Matter

154459 A bar magnet of moment $3.0 \mathrm{~A}-\mathrm{m}^{2}$ is placed in a uniform magnetic induction field of $2 \times 10^{-5} \mathrm{~T}$. If each pole of the magnet experiences a force of $6 \times 10^{-4} \mathrm{~N}$. The length of the magnet is:

1 $0.5 \mathrm{~m}$
2 $0.3 \mathrm{~m}$
3 $0.2 \mathrm{~m}$
4 $0.1 \mathrm{~m}$
Magnetism and Matter

154460 A bar magnet when placed at an angle of $30^{\circ}$ to the direction of magnetic field induction of $5 \times$ $10^{-2} \mathrm{~T}$ experiences a moment of couple $25 \times 10^{-6}$ $\mathrm{Nm}$. If the length of the magnet is $5 \mathrm{~cm}$, its pole strength is:

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

154274 Given below are two statements:
Statements I: For diamagnetic substance $-1 \leq \chi$ $ \lt 0$, where $\chi$ is the magnetic susceptibility.
Statements II: Diamagnetic substances when placed in an external magnetic field, tend to move from stronger to weaker part of field.
In the light of the above statements, choose the correct answer from the options given below.

1 Both Statements I and Statements II are false
2 Both Statements I and Statements II are true
3 Statement I is incorrect but Statement II is true
4 Statement I and Statement II are false
Magnetism and Matter

154278 The susceptibility of a paramagnetic material is 99. The permeability of the material in $\mathrm{Wb} / \mathrm{A}$ $\mathrm{m}$, is
[Permeability of free space $\mu_{0}=4 \pi \times 10^{-7}$ $\mathbf{W b} / \mathbf{A}-\mathbf{m}]$

1 $4 \pi \times 10^{-7}$
2 $4 \pi \times 10^{-4}$
3 $4 \pi \times 10^{-5}$
4 $4 \pi \times 10^{-6}$
Magnetism and Matter

154459 A bar magnet of moment $3.0 \mathrm{~A}-\mathrm{m}^{2}$ is placed in a uniform magnetic induction field of $2 \times 10^{-5} \mathrm{~T}$. If each pole of the magnet experiences a force of $6 \times 10^{-4} \mathrm{~N}$. The length of the magnet is:

1 $0.5 \mathrm{~m}$
2 $0.3 \mathrm{~m}$
3 $0.2 \mathrm{~m}$
4 $0.1 \mathrm{~m}$
Magnetism and Matter

154460 A bar magnet when placed at an angle of $30^{\circ}$ to the direction of magnetic field induction of $5 \times$ $10^{-2} \mathrm{~T}$ experiences a moment of couple $25 \times 10^{-6}$ $\mathrm{Nm}$. If the length of the magnet is $5 \mathrm{~cm}$, its pole strength is:

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

154274 Given below are two statements:
Statements I: For diamagnetic substance $-1 \leq \chi$ $ \lt 0$, where $\chi$ is the magnetic susceptibility.
Statements II: Diamagnetic substances when placed in an external magnetic field, tend to move from stronger to weaker part of field.
In the light of the above statements, choose the correct answer from the options given below.

1 Both Statements I and Statements II are false
2 Both Statements I and Statements II are true
3 Statement I is incorrect but Statement II is true
4 Statement I and Statement II are false
Magnetism and Matter

154278 The susceptibility of a paramagnetic material is 99. The permeability of the material in $\mathrm{Wb} / \mathrm{A}$ $\mathrm{m}$, is
[Permeability of free space $\mu_{0}=4 \pi \times 10^{-7}$ $\mathbf{W b} / \mathbf{A}-\mathbf{m}]$

1 $4 \pi \times 10^{-7}$
2 $4 \pi \times 10^{-4}$
3 $4 \pi \times 10^{-5}$
4 $4 \pi \times 10^{-6}$
Magnetism and Matter

154459 A bar magnet of moment $3.0 \mathrm{~A}-\mathrm{m}^{2}$ is placed in a uniform magnetic induction field of $2 \times 10^{-5} \mathrm{~T}$. If each pole of the magnet experiences a force of $6 \times 10^{-4} \mathrm{~N}$. The length of the magnet is:

1 $0.5 \mathrm{~m}$
2 $0.3 \mathrm{~m}$
3 $0.2 \mathrm{~m}$
4 $0.1 \mathrm{~m}$
Magnetism and Matter

154460 A bar magnet when placed at an angle of $30^{\circ}$ to the direction of magnetic field induction of $5 \times$ $10^{-2} \mathrm{~T}$ experiences a moment of couple $25 \times 10^{-6}$ $\mathrm{Nm}$. If the length of the magnet is $5 \mathrm{~cm}$, its pole strength is:

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

154274 Given below are two statements:
Statements I: For diamagnetic substance $-1 \leq \chi$ $ \lt 0$, where $\chi$ is the magnetic susceptibility.
Statements II: Diamagnetic substances when placed in an external magnetic field, tend to move from stronger to weaker part of field.
In the light of the above statements, choose the correct answer from the options given below.

1 Both Statements I and Statements II are false
2 Both Statements I and Statements II are true
3 Statement I is incorrect but Statement II is true
4 Statement I and Statement II are false
Magnetism and Matter

154278 The susceptibility of a paramagnetic material is 99. The permeability of the material in $\mathrm{Wb} / \mathrm{A}$ $\mathrm{m}$, is
[Permeability of free space $\mu_{0}=4 \pi \times 10^{-7}$ $\mathbf{W b} / \mathbf{A}-\mathbf{m}]$

1 $4 \pi \times 10^{-7}$
2 $4 \pi \times 10^{-4}$
3 $4 \pi \times 10^{-5}$
4 $4 \pi \times 10^{-6}$
Magnetism and Matter

154459 A bar magnet of moment $3.0 \mathrm{~A}-\mathrm{m}^{2}$ is placed in a uniform magnetic induction field of $2 \times 10^{-5} \mathrm{~T}$. If each pole of the magnet experiences a force of $6 \times 10^{-4} \mathrm{~N}$. The length of the magnet is:

1 $0.5 \mathrm{~m}$
2 $0.3 \mathrm{~m}$
3 $0.2 \mathrm{~m}$
4 $0.1 \mathrm{~m}$
Magnetism and Matter

154460 A bar magnet when placed at an angle of $30^{\circ}$ to the direction of magnetic field induction of $5 \times$ $10^{-2} \mathrm{~T}$ experiences a moment of couple $25 \times 10^{-6}$ $\mathrm{Nm}$. If the length of the magnet is $5 \mathrm{~cm}$, its pole strength is:

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

154274 Given below are two statements:
Statements I: For diamagnetic substance $-1 \leq \chi$ $ \lt 0$, where $\chi$ is the magnetic susceptibility.
Statements II: Diamagnetic substances when placed in an external magnetic field, tend to move from stronger to weaker part of field.
In the light of the above statements, choose the correct answer from the options given below.

1 Both Statements I and Statements II are false
2 Both Statements I and Statements II are true
3 Statement I is incorrect but Statement II is true
4 Statement I and Statement II are false
Magnetism and Matter

154278 The susceptibility of a paramagnetic material is 99. The permeability of the material in $\mathrm{Wb} / \mathrm{A}$ $\mathrm{m}$, is
[Permeability of free space $\mu_{0}=4 \pi \times 10^{-7}$ $\mathbf{W b} / \mathbf{A}-\mathbf{m}]$

1 $4 \pi \times 10^{-7}$
2 $4 \pi \times 10^{-4}$
3 $4 \pi \times 10^{-5}$
4 $4 \pi \times 10^{-6}$