On equatorial line of bar magnet, what is the formula for magnetic field strength?

Define equatorial line of a bar magnet.

The direction of the null point is on the equatorial line of a bar magnet, when the north pole of the magnet is pointing

The direction of the null point is on the equatorial line of a bar magnet, when the north pole of the magnet is pointing

The direction of the null points is on the equatorial line of a bar magnet, when the north pole of the magnet is pointing

The null points are on the equatorial line of a bar magnet when the north pole of the magnet is pointing

Consider a point on an equatorial axis of a short bar magnet. The direction of magnetic field at that point is

Consider a point on an equatorial axis of a short bar magnet. The direction of magnetic field at that point is