Question

This diagram shows the magnetic field lines near the ends of two magnets. There is an error in the diagram.

Two bar magnet with the north pole of one near the south pole of the second. field lines are leaving the north pole and bent away from the south pole of the other. Field lines are leaving the south pole of one and bending away from the north pole of the other.
Which change will correct the error in the diagram?

changing the N to S
reversing the arrows on the left to point toward the N
changing the S to N
reversing the arrows on the right to point toward the S

Answer 1

Reverse the arrows on the right so they point toward the S.

Reason: magnetic field lines go from N to S outside the magnets, so they must enter (point toward) a south pole. The diagram incorrectly shows lines leaving an S, so those arrows should be reversed.