A. South pole
B. North and South Poles
C. North Pole
D. None of these
🧠 Explanation:
The northern pole of a magnet repels the north pole of another magnet, following the principle that like poles repel and unlike poles attract. This fundamental rule of magnetism, rooted in physics, governs how magnets interact, creating forces used in technologies like compasses and motors. The repulsion occurs due to aligned magnetic fields, pushing identical poles apart. Understanding this principle is key in electromagnetism, influencing applications from navigation to engineering. Studied in physics, it highlights the predictable behavior of magnetic forces, shaping innovations in science and technology across various practical and industrial contexts.
