M Madhu 🎓 Tutor II ⭐ 12.07K Points 📊 Physics Q. To hear a clear echo, the minimum distance should be (A) 165 feet (B) 165 meter (C) 16.5 feet (D) 16.5 meter 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (D) 16.5 meter You must be Logged in to update hint/solution 💬 Discussion 💬 Comment