Question

Magnetic lines of force

• A. are mere directions
• B. have no physical reality
• C. can be used to indicate the direction of the magnetic field at a point
• D. all the above are correct

Answer 1

The correct option is D

all the above are correct

Explanation for the correct answer,

1. Magnetic lines are imaginary line’s contact the north and south pole of the magnet.
2. They are also used for determining the direction of the magnetic field.
3. The magnetic line follows mere direction and they originated from the north pole and terminate at the south pole of the magnet and originate from the south pole in the inside of the magnet and ends at the north pole of the magnet thus forming a circular loop.
4. Therefore, all the given properties are related to magnetic lines.

Hence, option D is correct.