Exercise

The magnetic susceptibility is negative and very small for -

Magnetic moment of diamagnetic substances-

Which of the following statements is not true?

A magnetic needle kept in a non-uniform magnetic field, can experiences

Inside a bar magnet, the magnetic field lines

A short bar magnet has a magnetic moment of $0.48 \mathrm{J} {\mathrm{T}}^{–1}$. Give the direction and magnitude of the magnetic field produced by the magnet at a distance of $10 \mathrm{cm}$ from the centre of the magnet on the axis of the magnet.

A short bar magnet has a magnetic moment of $0.48 \mathrm{J} {\mathrm{T}}^{–1}$. Give the direction and magnitude of the magnetic field produced by the magnet at a distance of $10 \mathrm{cm}$ from the centre of the magnet on the equatorial lines (normal bisector) of the magnet.

A short bar magnet of magnetic moment $5.25\times {10}^{-2} {\mathrm{JT}}^{-1}$ is placed with its axis perpendicular to the earth’s field direction. At what distance from the centre of the magnet, the resultant field is inclined at 45º with earth’s field on its normal bisector. Magnitude of the earth’s field at the place is given to be $0.42 \mathrm{G}$. Ignore the length of the magnet in comparison to the distances involved.