WBCS.LIVE practice question

The frequency of ultrasonic waves is:

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Less than 20 Hz
  2. Between 20 Hz and 2 kHz
  3. Between 2 kHz and 20 kHz
  4. Greater than 20 kHz

Correct answer and explanation

Correct answer: Greater than 20 kHz