Question

Waves of audible frequency ranges from :

• A. $10Hz$ to $10,000Hz$
• B. $20Hz$ to $20,000Hz$
• C. $30Hz$ to $30,000Hz$
• D. none of these

Answer 1

Answer: (B)

$20Hz$ to $20,000Hz$

We have ,

ultrasonic frequency =20,000 Hz ,

and infrasonic frequency =20 Hz ,

below 20Hz and above 20,000Hz we are not able to hear any sound therefore audible frequency is in between them , from 20Hz to 20000Hz , which can be heard by human ear .