Which of the following statements about magnetic lines of force is not correct?
A
a magnnetic line of force is an imaginary line which the north pole of a magnet would describe if it is free to moves
B
magnetic lines of force do not cross one another
C
magnetic lines of force are closely packed together at neutral point
D
the presence of magnetic lines of force in a region indicates the presence of a magnetic field
Verified Correct Answer: C.
Physical Principles & Numerical Solution
At a neutral point, the magnetic field is weak or zero, so the magnetic lines of force are not closely packed together. Instead, they are sparse in that region.
Source: Myschool Past Questions Archive (Record #33940)