154001
The angle made by orbital angular momentum of electron with the direction of the orbital magnetic moment is
1 $90^{\circ}$
2 $180^{\circ}$
3 $60^{\circ}$
4 $120^{\circ}$
Explanation:
B The relation between electron's angular momentum $\mathrm{L}$ and magnetic momentum $\mathrm{M}$. $\mathrm{M}=-\frac{\mathrm{e}}{2 \mathrm{~m}_{\mathrm{e}}} \mathrm{L}$ Where, $e=$ charge of electron, $m_{e}=$ mass of electron The -ve sign shows the angular momentum and magnetic momentum are in opposite direction to each other, If $\mathrm{L}$ in $+\mathrm{z}$ direction the $\mathrm{M}$ will be in $-\mathrm{z}$ duration The angle between $\mathrm{L}$ and $\mathrm{m}$ is $180^{\circ}$
MHT-CET 2019
Magnetism and Matter
154023
For a vibration magnetometer, the time period of suspended bar magnet can be reduced by
1 moving it towards South pole
2 moving it towards North pole
3 moving it towards equator
4 moving it towards poles
Explanation:
C We know that, $\mathrm{T}=2 \pi \sqrt{\frac{\mathrm{I}}{\mathrm{mH}}}$ $\mathrm{T}=\frac{1}{\sqrt{\mathrm{H}}}$ Where, $\mathrm{H}=$ Horizontal component of Earth magnetic field. The time period can be reduced by moving toward the equator because $\mathrm{H}$ is high at equator.
CG PET- 2013
Magnetism and Matter
154028
If $M$ is magnetic moment and $B$ is the magnetic field, then the torque is given by
C Torque $=$ magnetic moment $\times$ magnetic field strength $\vec{\tau}=\vec{M} \times \vec{B}$ Hence, torque is cross product of $\mathrm{M}$ and $\mathrm{B}$.
BITSAT-2011
Magnetism and Matter
154036
The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be
1 horizontal
2 vertical
3 clockwise
4 anticlockwise
Explanation:
D The direction of induced current will be in anti clock wise direction. It can be analyzed by Flemings rights hand rule.
154001
The angle made by orbital angular momentum of electron with the direction of the orbital magnetic moment is
1 $90^{\circ}$
2 $180^{\circ}$
3 $60^{\circ}$
4 $120^{\circ}$
Explanation:
B The relation between electron's angular momentum $\mathrm{L}$ and magnetic momentum $\mathrm{M}$. $\mathrm{M}=-\frac{\mathrm{e}}{2 \mathrm{~m}_{\mathrm{e}}} \mathrm{L}$ Where, $e=$ charge of electron, $m_{e}=$ mass of electron The -ve sign shows the angular momentum and magnetic momentum are in opposite direction to each other, If $\mathrm{L}$ in $+\mathrm{z}$ direction the $\mathrm{M}$ will be in $-\mathrm{z}$ duration The angle between $\mathrm{L}$ and $\mathrm{m}$ is $180^{\circ}$
MHT-CET 2019
Magnetism and Matter
154023
For a vibration magnetometer, the time period of suspended bar magnet can be reduced by
1 moving it towards South pole
2 moving it towards North pole
3 moving it towards equator
4 moving it towards poles
Explanation:
C We know that, $\mathrm{T}=2 \pi \sqrt{\frac{\mathrm{I}}{\mathrm{mH}}}$ $\mathrm{T}=\frac{1}{\sqrt{\mathrm{H}}}$ Where, $\mathrm{H}=$ Horizontal component of Earth magnetic field. The time period can be reduced by moving toward the equator because $\mathrm{H}$ is high at equator.
CG PET- 2013
Magnetism and Matter
154028
If $M$ is magnetic moment and $B$ is the magnetic field, then the torque is given by
C Torque $=$ magnetic moment $\times$ magnetic field strength $\vec{\tau}=\vec{M} \times \vec{B}$ Hence, torque is cross product of $\mathrm{M}$ and $\mathrm{B}$.
BITSAT-2011
Magnetism and Matter
154036
The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be
1 horizontal
2 vertical
3 clockwise
4 anticlockwise
Explanation:
D The direction of induced current will be in anti clock wise direction. It can be analyzed by Flemings rights hand rule.
154001
The angle made by orbital angular momentum of electron with the direction of the orbital magnetic moment is
1 $90^{\circ}$
2 $180^{\circ}$
3 $60^{\circ}$
4 $120^{\circ}$
Explanation:
B The relation between electron's angular momentum $\mathrm{L}$ and magnetic momentum $\mathrm{M}$. $\mathrm{M}=-\frac{\mathrm{e}}{2 \mathrm{~m}_{\mathrm{e}}} \mathrm{L}$ Where, $e=$ charge of electron, $m_{e}=$ mass of electron The -ve sign shows the angular momentum and magnetic momentum are in opposite direction to each other, If $\mathrm{L}$ in $+\mathrm{z}$ direction the $\mathrm{M}$ will be in $-\mathrm{z}$ duration The angle between $\mathrm{L}$ and $\mathrm{m}$ is $180^{\circ}$
MHT-CET 2019
Magnetism and Matter
154023
For a vibration magnetometer, the time period of suspended bar magnet can be reduced by
1 moving it towards South pole
2 moving it towards North pole
3 moving it towards equator
4 moving it towards poles
Explanation:
C We know that, $\mathrm{T}=2 \pi \sqrt{\frac{\mathrm{I}}{\mathrm{mH}}}$ $\mathrm{T}=\frac{1}{\sqrt{\mathrm{H}}}$ Where, $\mathrm{H}=$ Horizontal component of Earth magnetic field. The time period can be reduced by moving toward the equator because $\mathrm{H}$ is high at equator.
CG PET- 2013
Magnetism and Matter
154028
If $M$ is magnetic moment and $B$ is the magnetic field, then the torque is given by
C Torque $=$ magnetic moment $\times$ magnetic field strength $\vec{\tau}=\vec{M} \times \vec{B}$ Hence, torque is cross product of $\mathrm{M}$ and $\mathrm{B}$.
BITSAT-2011
Magnetism and Matter
154036
The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be
1 horizontal
2 vertical
3 clockwise
4 anticlockwise
Explanation:
D The direction of induced current will be in anti clock wise direction. It can be analyzed by Flemings rights hand rule.
154001
The angle made by orbital angular momentum of electron with the direction of the orbital magnetic moment is
1 $90^{\circ}$
2 $180^{\circ}$
3 $60^{\circ}$
4 $120^{\circ}$
Explanation:
B The relation between electron's angular momentum $\mathrm{L}$ and magnetic momentum $\mathrm{M}$. $\mathrm{M}=-\frac{\mathrm{e}}{2 \mathrm{~m}_{\mathrm{e}}} \mathrm{L}$ Where, $e=$ charge of electron, $m_{e}=$ mass of electron The -ve sign shows the angular momentum and magnetic momentum are in opposite direction to each other, If $\mathrm{L}$ in $+\mathrm{z}$ direction the $\mathrm{M}$ will be in $-\mathrm{z}$ duration The angle between $\mathrm{L}$ and $\mathrm{m}$ is $180^{\circ}$
MHT-CET 2019
Magnetism and Matter
154023
For a vibration magnetometer, the time period of suspended bar magnet can be reduced by
1 moving it towards South pole
2 moving it towards North pole
3 moving it towards equator
4 moving it towards poles
Explanation:
C We know that, $\mathrm{T}=2 \pi \sqrt{\frac{\mathrm{I}}{\mathrm{mH}}}$ $\mathrm{T}=\frac{1}{\sqrt{\mathrm{H}}}$ Where, $\mathrm{H}=$ Horizontal component of Earth magnetic field. The time period can be reduced by moving toward the equator because $\mathrm{H}$ is high at equator.
CG PET- 2013
Magnetism and Matter
154028
If $M$ is magnetic moment and $B$ is the magnetic field, then the torque is given by
C Torque $=$ magnetic moment $\times$ magnetic field strength $\vec{\tau}=\vec{M} \times \vec{B}$ Hence, torque is cross product of $\mathrm{M}$ and $\mathrm{B}$.
BITSAT-2011
Magnetism and Matter
154036
The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be
1 horizontal
2 vertical
3 clockwise
4 anticlockwise
Explanation:
D The direction of induced current will be in anti clock wise direction. It can be analyzed by Flemings rights hand rule.
