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Radio waves are in the frequency range of 3   kHz   to   300   GHz . In the frequency spectrum of electromagnetic waves these waves are:

Options

  1. Ajust above the ultraviolet radiations.
  2. Bjust below the infrared radiations.
  3. Cbetween X-rays and gamma rays.
  4. Dnone of the above.

Correct answer

B. just below the infrared radiations.

Step-by-step solution

Radio waves are in the lowest frequency range of the electromagnetic spectrum. Above that, we have infrared, visible, ultraviolet, X-rays and gamma rays. Like all other electromagnetic waves, radio waves also travel with the speed of light. The wavelength of radio waves is in the range of 1   mm   to   100   km . Naturally occurring radio waves are produced by lightning or by astronomical objects. Artificially generated radio waves are used for communication.

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