Answered

Which is NOT a property of magnetic field lines?


a.

They form complete loops from pole to pole.

b.

They can be directly observed.

c.

They never cross.

d.

They spread out as they get farther from the magnet.

Verified Answer :

The correct answer is (b) They can be directly observed.

Answer:The correct answer is option (b).

Explanation:

Properties of magnetic lines:

  • They from closed loop from pole to pole.
  • They never intersect each other.
  • They are stronger near the poles as compare to lines in the middle.
  • They move from north to south pole in air and from south to north in the interior of the magnet.
  • Their density decreases as they move away from the poles.
  • They are not visualized by eyes.

Option (b) is correct as magnetic field lines cannot be directly observed.