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Discussion :: Environmental Science

  1. Most of the radiation emitted by a human body is in the form of:

    2. A.

     Ultraviolet radiation and is invisible
    B.

     Visible radiation but is too weak to be visible
    C.

     Infrared radiation and is invisible
    D.

     Humans do not emit electromagnetic radiation

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    Answer : Option C

    Explanation :

    Most of the radiation emitted by the human body is mainly at the wavelength of 12 micron. The wavelength of infrared radiation is between 0.75 to 1000 micron (1 micron = 10-6metres). Hence , the majority of radiation emitted by human bodies lie in the infrared region.

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