P Pradeep Sikarwar 🎓 Tutor III ⭐ 9.01K Points 📊 Physics Q. Sound of frequency below 20 Hz is called (A) audio sounds (B) infrasonic (C) ultrasonic (D) supersonics 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) infrasonic You must be Logged in to update hint/solution 💬 Discussion 💬 Comment