Choose the incorrect statement from the following regarding magnetic lines of field:

Options

A. The direction of magnetic field at point is taken to be the direction in which the North pole of a magnetic compass needles points
B. Magnetic field lines are closed curves
C. If magnetic filed lines are parallel and equidistant, they represent zero field strength
D. Relative strength of magnetic field is shown by the degree of closeness of the field lines

Answer

C

Explanation

Let us consider the giagram given below to represent the magnetic field around a bar magnet.

From this diagram and our basic knowledge we can infer that options (a), (b) and (d) are correct but option (c) is incorrect, as the parallel lines of magnetic field represent the uniform magnetic field.