GEOLOGY

Detailed explanation-1: -Magnetic field lines start from North pole and end at South pole.

Detailed explanation-2: -A magnetic field may be represented by “magnetic field lines” which begin at a North pole and end on a South pole, in exactly the same way as electric field lines begin and end on positive and negative charges.

Detailed explanation-3: -The direction of the magnetic field is taken to be the direction in which a north pole of the compass needle moves inside it. Therefore it is taken by convention that the field lines emerge from north pole and merge at the south pole.

Detailed explanation-4: -The north magnetic pole, also known as the magnetic north pole, is a point on the surface of Earth’s Northern Hemisphere at which the planet’s magnetic field points vertically downward (in other words, if a magnetic compass needle is allowed to rotate in three dimensions, it will point straight down).

Detailed explanation-5: -The magnetic field lines originate from the south pole and terminate at the north pole of the magnet.