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(D) When a bar magnet is placed such that its magnetic moment $\vec{M}$ is parallel to the Earth's horizontal magnetic field $\vec{B}_H$,the magnetic

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(D) When a bar magnet is placed such that its magnetic moment $\vec{M}$ is parallel to the Earth's horizontal magnetic field $\vec{B}_H$,the magnetic field produced by the magnet opposes the Earth's magnetic field in the equatorial region.The locus of points where the magnetic field of the magnet is equal and opposite to the Earth's magnetic field forms a circle (or ring) around the magnet in the equatorial plane.Since there are infinite points on this circle where the net magnetic field is zero,there are infinite neutral points.In a $2D$ plane (like a sheet of paper),we only observe two of these points,which are the intersection of the ring with the plane of the paper.

How many neutral points will be obtained when a bar magnet is kept with its magnetic moment parallel to the Earth's magnetic field?

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