Electromagnetic waves are the combination of electric field and magnetic vibrations. A radio wave has less energy than a wave of visible range. Thus, option D is correct.
Radio waves are part of the electromagnetic (EM) spectrum that has a wavelength of 1000 m - 30 cm and a frequency of 3 Hz - 1 gigahertz. It travels in space at the speed as same as light.
It has less energy but the same amplitude as the waves of the visible range and is the longest wavelength in the EM spectrum that is used in Satellite Communication, RADAR, Radio Broadcasting, etc.
Therefore, the radio waves have the same amplitude as a visible range.
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