Question

Pick the correct answer from the following two statements :
(a) Within a bar magnet, magnetic field lines travel from south pole to north pole.
(b) Outside bar magnet, magnetic field lines travel from north pole to south pole.

• A. Both (a) and (b) are true
• B. Both (a) and (b) are false
• C. Only (a) is true
• D. Only (b) is true

Answer 1

The Correct Option is A

The concept of magnetic field lines is a fundamental aspect of magnetism. Here is an explanation of each statement to understand if they are true or false.

(a) Within a bar magnet, magnetic field lines travel from south pole to north pole.

When observing magnetic field lines inside a bar magnet, they run from the south pole to the north pole. This flow directionality within the magnet aligns with the conventional representation of magnetic field lines.

(b) Outside a bar magnet, magnetic field lines travel from north pole to south pole.

Outside the bar magnet, magnetic field lines emerge from the north pole and enter the south pole. This is the standard depiction of how field lines behave in the space surrounding a magnet.

Given the explanations above, it is evident that both statements (a) and (b) are accurate representations of the behavior of magnetic field lines.

Thus, the correct answer is: Both (a) and (b) are true.

Answer 2

Magnetic field lines form closed loops.

• Outside the bar magnet, magnetic field lines travel from the north pole to the south pole.
• Inside the bar magnet, they travel from the south pole to the north pole.

This confirms that:

• Statement (a) is true
• Statement (b) is also true

Correct Answer: Both (a) and (b) are true