Question

how are the magnetic field lines near the south pole of a magnet affected when a second south pole is brought near it?
the field lines combine with the lines around the second south pole.
the field lines overlap with the lines from the second south pole.
the field lines bend toward the second south pole.
the field lines bend away from the second south pole.

Explanation:

Magnetic field lines around a magnet go from the north pole to the south pole outside the magnet. Like magnetic poles (south - south here) repel each other. The magnetic field lines near the south pole of the first magnet will be affected by the second south pole. Since like poles repel, the field lines near the south pole of the first magnet will bend away from the second south pole (because the field lines of each south pole point towards their respective south poles, and the repulsion causes the lines to deflect away from the other south pole).

• Option 1: Field lines don't "combine" in this way for like poles; they interact due to repulsion, so this is incorrect.
• Option 2: Overlapping is not the correct description of the interaction between field lines of like poles; repulsion causes deflection, so this is incorrect.
• Option 3: Since like poles repel, the lines should bend away, not toward the second south pole, so this is incorrect.
• Option 4: This is consistent with the repulsion between like magnetic poles, as the field lines near the south pole will be deflected away from the other south pole.

Answer:

D. The field lines bend away from the second south pole.