Question

the strength of a magnet is negligible at its

Answer 1

The magnet attracts or repels objects due to "Magnetic Field " .
_______________________________________________________________And if any object is out of magnetic field it cant feel the attraction or repulsion
____________________________________________________________  because no force acting on it .
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so the force will be negligible out from magnetic field

Answer 2

Explanation:

The strength of the magnet is negligible at its center because the field lines near the center of the magnet are always parallel to the length of the magnet bar. The density of the field line is always the maximum at the poles of a magnet bar, whereas the density of field line is least and negligible in its center.