MCQ
Sounds having frequency more than $20,000\ Hz$ are called:
- ASonic sound
- ✓Ultrasonic sound
- CInfrasonic sound
- DNone of these
Sounds having frequency more than $20,000\ Hz$ are called Ultrasonic sound. As this is above the normal hearing range for humans, we cannot hear ultrasonic sound.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.