R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Physics Q. Photon is the fundamental unit/ quantum of (A) magnetism (B) light (C) electricity (D) gravitation 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) light You must be Logged in to update hint/solution 💬 Discussion 💬 Comment