Which of the following options is INCORRECT with relation to the given statement?
The magnetic field lines of a bar magnet may be drawn using:

Correct option is C

Correct Answer: C) wood particles

Explanation:
The magnetic field lines of a bar magnet can be visualized using certain tools and materials that interact with magnetic fields.

 Analyze the options:

• A. Iron filings:
  Iron filings align along the magnetic field lines when sprinkled around a bar magnet because they are influenced by the magnetic forces. This is a correct method.

• B. A magnetic compass:
  A compass needle aligns with the direction of the magnetic field. By moving the compass around the magnet, the magnetic field lines can be traced. This is also a correct method.

• C. Wood particles:
  Wood particles are non-magnetic and are not affected by magnetic fields. They do not align or provide any visible pattern for magnetic field lines. Therefore, this is an incorrect option.

• D. Another bar magnet:
  A second bar magnet placed near the first one will interact with the magnetic field lines, helping to understand the field's direction and strength. This is a correct method.

Thus, wood particles (Option C) cannot be used to draw magnetic field lines.

• They emerge from the north pole and enter the south pole of a magnet.
• They never intersect.
• Their density indicates the strength of the magnetic field.
  ● Tools to Visualize Magnetic Fields: Iron filings, magnetic compasses, and ferrofluid are commonly used.
  ● Practical Applications: Mapping magnetic fields is essential in designing electrical motors, generators, and magnetic sensors.