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GK QUESTION#3060

What is the correct order of radiations in descending order of frequencies?

  1. AInfrared > Microwaves > Radio waves > X-rays
  2. BRadio waves > X-rays > Microwaves > Infrared
  3. CX-rays > Infrared > Microwaves > Radio wavesCorrect answer
  4. DInfrared > Microwaves > X-rays > Radio waves
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Answer

C. X-rays > Infrared > Microwaves > Radio waves

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Explanation

Among the listed bands, the order from higher to lower frequency is X-rays, infrared, microwaves, then radio waves. For electromagnetic radiation in vacuum, higher frequency corresponds to shorter wavelength and higher photon energy.

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