R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Physics Q. The least penetrating power ray is (A) b-Ray (B) a-Ray (C) X-Ray (D) g-Ray 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) a-Ray You must be Logged in to update hint/solution 💬 Discussion 💬 Comment