Multiple choice general knowledge science & technology

Sound higher than 20000 hertz are called

  1. sonic booms

  2. ultra sonic

  3. super sonic

  4. sub sonic

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sounds with frequencies higher than 20,000 hertz are called ultrasonic. This is above the upper limit of human hearing. Infrasonic refers to sounds below 20 Hz, supersonic refers to objects moving faster than the speed of sound, and sonic boom is the shockwave created when an object breaks the sound barrier.