Physics
WAEC 2021
Which of the arrangements of radiations below shows decreasing order of wavelengths?
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A.
X-rays> radio waves > infrared radiations
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B.
Radio waves> infrared radiations > X-rays
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C.
Infrared radiations > radio waves > X-rays
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D.
X-rays> infrared radiations > radio waves
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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