Transmission Of Heat Question 140
Question: We consider the radiation emitted by the human body. Which of the following statements is true
[CBSE PMT 2003]
Options:
A) The radiation is emitted only during the day
B) The radiation is emitted during the summers and absorbed during the winters
C) The radiation emitted lies in the ultraviolet region and hence is not visible
D) The radiation emitted is in the infra-red region
Show Answer
Answer:
Correct Answer: D
Solution:
Everybody at all time, at all temperatures emits radiation (except at $ T=0 $ ). The radiation emitted by the human body is in the infra-red region.
BETA
