R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Physics Q. Ball pen functions on the principle of (A) Viscosity (B) Surface tension (C) Gravitational force (D) Boyle's Law 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) Surface tension You must be Logged in to update hint/solution 💬 Discussion 💬 Comment