GEOLOGY

Detailed explanation-1: -It is equally strong at the north pole and the south pole. The force exerted by the middle of the magnet is weaker.

Detailed explanation-2: -As the distance from the pole increases, the density of magnetic force of lines decreases. Hence magnetic force of lines are more crowded at the poles compared to the centre of magnet and hence strength of magnetic field at north and south pole magnet is more compared to centre of magnet.

Detailed explanation-3: -When iron filings are spread evenly on a magnet, most of the filings gets attracted to the poles. This shows that the poles have the strongest magnetic strength in a magnet.

Detailed explanation-4: -The magnetic field is strongest at the poles of the magnet, but weaker in the middle of the magnet and is not nonexistent. The magnetic flow goes out of the north end and then back into the south end so the field in the middle actually points towards the north, it just is significantly weaker.

Detailed explanation-5: -They go to the south pole from the north pole. In regions where the magnetic field is the greatest, magnetic field lines naturally bunch together. This implies that the density of field lines indicates the strength of the field. The closer the magnetic field lines are, the stronger the magnetic field at that point.