Frequency of Radiation

A certain radar installation used to track airplanes transmits electromagnetic radiation of wavelength 3cm. What is the frequency of this radiation, measured in billions of hertz.


1 個解答

  • 天同
    Lv 7
    6 年前

    Take the speed of electromagentic wave be 3 x 10^8 m/s

    Hence, frequency of radiation = 3x10^8/(3/100) Hz = 10^10 Hz = 10 billion Hz

    2014-07-24 17:41:27 補充:

    Note that in physics, the term "billion Heratz" is rarely used. Instead, we usually use the term Giga-Hertz, abbreviated GHz, to represent 1 "billion hertz".