K Kartik Sharma 🎓 Tutor III ⭐ 8.30K Points 📊 Physics Q. The S. I. unit of refractive index is (A) meter (B) cm (C) watt (D) no unit 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (D) no unit You must be Logged in to update hint/solution 💬 Discussion 💬 Comment