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Doctors Medicines MCQs Q&A

  1. 3 kHz
  2. 3 to 30 MHz
  3. 30 to 300 MHz
  4. 10 GHz
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1 Answers

Answer: Option 2

High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters).

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