WBCS.LIVE practice question

Which one of the following statements is not correct?

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

Answer options

  1. Sound waves in gases are longitudinal in nature.
  2. Sound waves having higher amplitudes are louder.
  3. Sound waves having frequency below 20 Hz are known as ultrasonic waves.
  4. Sound waves with high audible frequencies are sharp.

Correct answer and explanation

Correct answer: Sound waves having frequency below 20 Hz are known as ultrasonic waves.