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Electromagnetic Waves question

2003 · Q140
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Electromagnetic Waves question

2003 · Q140

NEETPhysicsElectromagnetic WavesMCQ+4 / −1
We consider the radiation emitted by the human body. Which one of the following statements is true?
  1. A
    The radiation emitted is in the infra-red region
  2. B
    The radiation emitted only during the day
  3. C
    The radiation is emitted during the summers and absorbed during the winters
  4. D
    The radiation emitted lies in the ultraviolet region and hence is not visible
View written solutionFree

Correct answer: A

Every body at all time, at all temperatures emit radiation (except at T = 0), which fall in the infrared region.

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