HomeEveryday Science MCQsWhat do we call when the sound of frequency will be below 20 Hz? 100. What do we call when the sound of frequency will be below 20 Hz?By Admin / September 17, 2025 A. Audio sounds B. Infrasonic C. Ultrasonic D. Supersonics ✅ The correct answer is option B.
1. Which of the following does not pollute the air? Leave a Comment / Everyday Science MCQs / By Admin
2. Which of the following planets have the longest day? Leave a Comment / Everyday Science MCQs / By Admin