CBSE Class 10 Science 2019 · Paper 31/5/3 · Question 15

The relative strength of a magnetic field is shown by the closeness of its field lines: the field is stronger where the lines are crowded together. Near A, close to the north pole, the field lines converge and are crowded; at B, far above the magnet, they are widely spaced. Hence the magnetic field at A is stronger than at B. Direction: outside the magnet the field lines emerge from the north pole and merge at the south pole, so in the redrawn diagram every line carries an arrow pointing from N, over the top of the magnet, to S (see the figure); inside the magnet the lines run from S to N.