R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Physics Q. Sound of frequency below 20 Hz is called (A) Audio sounds (B) Infrasonic (C) Supersonics (D) Ultrasonic 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) Infrasonic You must be Logged in to update hint/solution 💬 Discussion 💬 Comment