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The frequency of ultrasound waves is

Options

  1. Aless than 20 Hz
  2. Bbetween 20 Hz and 2 kHz
  3. Cbetween 2 Hz and 20 kHz
  4. Dgreater than 20 Hz

Correct answer

D. greater than 20 Hz

Step-by-step solution

The frequency of ultrasonic waves is greater than 20000(20 k ) Hz .

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