Question

We consider the radiation emitted by the human body. Which of the following statements is true :

• A. The radiation emitted is in the infrared region
• B. The radiation is emitted only during the day
• C. The radiation is emitted during the summers and absorbed during the winters
• D. The radiation emitted lies in the ultraviolet region and hence is not visible

Answer 1

The correct option is A The radiation emitted is in the infrared region

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