360405 A bar magnet of magnetic moment 2\(Am\) free to rotate about a vertical axis pass through its centre. The magnet is released from rest from east - west position. Then the \(K.E\) of the magnet as it takes north - south position is \(\left(B_{l I}=25 \mu T\right)\)

360406 With reference to magnetic dipole, match the terms of Column I with the items of Column II and choose the correct option from the codes given below.
Column I
Column II
A
Equatorial field for a short dipole
P
\(\frac{{{\mu _0}}}{{4\pi }}\frac{{2M}}{{{r^3}}}\)
B
Axial field for a short dipole
Q
\( - \overrightarrow M \cdot \vec B\)
C
Torque on a dipole
R
\(\overrightarrow M \times \vec B\)
D
Potential energy of a dipole
S
\(\frac{{{\mu _0}}}{{4\pi }}\frac{M}{{{r^3}}}\)

360407 The magnetic moment of a bar magnet is \(0.5\,A{m^2}.\) It is suspended in a uniform magnetic field of \(8 \times {10^{ - 2}}\;T.\) The work done in rotating it from its most stable to most unstable position is

360408 The work done in turning a magnet of magnetic moment \(M\) by an angle of \(90^{\circ}\) from the meridian is \(n\) times the corresponding work done to turn it through an angle of \(60^{\circ}\) :

360405 A bar magnet of magnetic moment 2\(Am\) free to rotate about a vertical axis pass through its centre. The magnet is released from rest from east - west position. Then the \(K.E\) of the magnet as it takes north - south position is \(\left(B_{l I}=25 \mu T\right)\)

360406 With reference to magnetic dipole, match the terms of Column I with the items of Column II and choose the correct option from the codes given below.
Column I
Column II
A
Equatorial field for a short dipole
P
\(\frac{{{\mu _0}}}{{4\pi }}\frac{{2M}}{{{r^3}}}\)
B
Axial field for a short dipole
Q
\( - \overrightarrow M \cdot \vec B\)
C
Torque on a dipole
R
\(\overrightarrow M \times \vec B\)
D
Potential energy of a dipole
S
\(\frac{{{\mu _0}}}{{4\pi }}\frac{M}{{{r^3}}}\)

360407 The magnetic moment of a bar magnet is \(0.5\,A{m^2}.\) It is suspended in a uniform magnetic field of \(8 \times {10^{ - 2}}\;T.\) The work done in rotating it from its most stable to most unstable position is

360408 The work done in turning a magnet of magnetic moment \(M\) by an angle of \(90^{\circ}\) from the meridian is \(n\) times the corresponding work done to turn it through an angle of \(60^{\circ}\) :

360405 A bar magnet of magnetic moment 2\(Am\) free to rotate about a vertical axis pass through its centre. The magnet is released from rest from east - west position. Then the \(K.E\) of the magnet as it takes north - south position is \(\left(B_{l I}=25 \mu T\right)\)

360406 With reference to magnetic dipole, match the terms of Column I with the items of Column II and choose the correct option from the codes given below.
Column I
Column II
A
Equatorial field for a short dipole
P
\(\frac{{{\mu _0}}}{{4\pi }}\frac{{2M}}{{{r^3}}}\)
B
Axial field for a short dipole
Q
\( - \overrightarrow M \cdot \vec B\)
C
Torque on a dipole
R
\(\overrightarrow M \times \vec B\)
D
Potential energy of a dipole
S
\(\frac{{{\mu _0}}}{{4\pi }}\frac{M}{{{r^3}}}\)

360407 The magnetic moment of a bar magnet is \(0.5\,A{m^2}.\) It is suspended in a uniform magnetic field of \(8 \times {10^{ - 2}}\;T.\) The work done in rotating it from its most stable to most unstable position is

360408 The work done in turning a magnet of magnetic moment \(M\) by an angle of \(90^{\circ}\) from the meridian is \(n\) times the corresponding work done to turn it through an angle of \(60^{\circ}\) :

360405 A bar magnet of magnetic moment 2\(Am\) free to rotate about a vertical axis pass through its centre. The magnet is released from rest from east - west position. Then the \(K.E\) of the magnet as it takes north - south position is \(\left(B_{l I}=25 \mu T\right)\)

360406 With reference to magnetic dipole, match the terms of Column I with the items of Column II and choose the correct option from the codes given below.
Column I
Column II
A
Equatorial field for a short dipole
P
\(\frac{{{\mu _0}}}{{4\pi }}\frac{{2M}}{{{r^3}}}\)
B
Axial field for a short dipole
Q
\( - \overrightarrow M \cdot \vec B\)
C
Torque on a dipole
R
\(\overrightarrow M \times \vec B\)
D
Potential energy of a dipole
S
\(\frac{{{\mu _0}}}{{4\pi }}\frac{M}{{{r^3}}}\)

360407 The magnetic moment of a bar magnet is \(0.5\,A{m^2}.\) It is suspended in a uniform magnetic field of \(8 \times {10^{ - 2}}\;T.\) The work done in rotating it from its most stable to most unstable position is

360408 The work done in turning a magnet of magnetic moment \(M\) by an angle of \(90^{\circ}\) from the meridian is \(n\) times the corresponding work done to turn it through an angle of \(60^{\circ}\) :