Q351
Most of the radiation emitted by a human body is in the form of:
A.
Ultraviolet radiation and is invisible
B.
Visible radiation but is too weak to be visible
C.
Infrared radiation and is invisible
AnswerD.
Humans do not emit electromagnetic radiation
Answer: Option C
Solution
Answer: Option C
Solution:
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.