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Which of the arrangements of radiations below shows decreasing order of wavelengths?   

Physics
WAEC 2021

Which of the arrangements of radiations below shows decreasing order of wavelengths?   

  • A.   X-rays> radio waves > infrared radiations     
  • B. Radio waves> infrared radiations > X-rays     
  • C. Infrared radiations > radio waves > X-rays   
  • D.  X-rays> infrared radiations > radio waves
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Correct Answer: Option B
Explanation

 radio waves have a longer wavelength than infrared light, and infrared than x-rays in the electromagnetic spectrum.

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