The technology which uses electromagnetic radiation with the longest wavelength is Compact fluorescent light bulb. The correct option is B.
The electromagnetic wave is the white light or Sunlight coming directly from the Sun. This light ray is the form of wave. This light when falls on any object segregates into the range of all types of EM radiation. also called as electromagnetic radiation.
Radiation is packet of energy that travels and spreads out. It has radio waves, infrared waves, visible light waves, ultraviolet rays and microwaves.
The technology which uses electromagnetic radiation with the longest wavelength is Compact fluorescent light bulb.
Thus, the correct option is B.
Learn more about electromagnetic wave.
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