Electromagnetic Waves Ques 19
19. We consider the radiation emitted by the human body. Which of the following statements is true?
[2003]
(a) the radiation emitted lies in the ultraviolet region and hence is not visible.
(b) the radiation emitted is in the infra-red region.
(c) the radiation is emitted only during the day.
(d) the radiation is emitted during the summers and absorbed during the winters.
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Answer:
Correct Answer: 19.(b)
Solution:
- (b) Depends on the magnitude of frequency
BETA
