In which direction, the magnetic field on the axis at a distance z from the centre of the bar magnet would be ?
A
In the perpendicular direction of the magnetic moment (−→M) of the magnet
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B
In the direction of the magnetic dipole moment (−→M) of the magnet
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C
Its direction depends on the magnitude of the magnetic moment (−→M) of the magnet
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D
In the opposite direction of the magnetic dipole moment (−→M) of the magnet,
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Solution
The correct option is A In the direction of the magnetic dipole moment (−→M) of the magnet The magnetic field on the axis from the centre of the bar magnet would be in the direction of the magnetic dipole moment (−→M) of the magnet.