Answer:
The given electromagnetic wave is a radio wave.
Explanation:
Rate of vibration of the particle or frequency of the electromagnetic wave:
frequency = [tex]\nu=3.9\times 10^8[/tex] vibrations per second
Wave length of the electromagnetic wave will be given by:
[tex]\lambda =\frac{c}{\nu}[/tex]
[tex]\lambda =\frac{3\times 10^8 m/s}{3.9\times 10^8}=0.769 m[/tex]
The wavelength of of the electromagnetic wave is lying in the range of 1 mm to 100 km that is radio wave.
Hence ,the given electromagnetic wave is a radio wave.
