Question

Sound waves with a frequency of $20Hz$ to $20,000Hz$ are called_______.

• A. Audible sounds
• B. Inaudible sounds
• C. Infrasonics
• D. Ultrasonics

Answer 1

The correct option is A

Audible sounds

Sound waves above 20,000 Hz are ultrasonics. Sound waves below the frequency of 20Hz are infrasonics. Both are inaudible sounds for humans. Sound waves between 20Hz to 20,000Hz are audible sounds.