Consider the following statements :
Statement - I : The magnetic field lines emerge from the north pole and merge at the south pole of a bar magnet.
Statement - II : The direction of magnetic field is taken to be the direction in which the north pole of a compass needle moves.
Statement - III : There is no field inside a bar magnet.
Statement - IV : The relative strength of the magnetic field is shown by the degree of closeness of the field lines.
Which of the above statement(s) is/are correct?
1
Statements - I, II, III and IV
2
Statements - I, II, and III
3
Statements - I, II and IV
4
Statements - II, III and IV