We consider the radiation emitted by the human body. Which one of the following…
Physics · Class 12 · CBSE — Electromagnetic Waves
We consider the radiation emitted by the human body. Which one of the following statements is true?
- the radiation emitted is in the infrared region
- the radiation is emitted only during the day
- the radiation is emitted during the summers and absorbed during the winters
- the radiation emitted lies in the ultraviolet region and hence is not visible
Answer
(A) the radiation emitted is in the infrared region
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- The energy of the e.m. waves is of the order of 15 keV. To which part of the spectrum does it belong?
- Frequency of radiations arising from two close energy levels in hydrogen, known as lamb shift is 1057 MHz…
- The ultra high frequency band of radiowaves in electromagnetic wave is used as in
- The pressure exerted by an electromagnetic wave of intensity I(Wm -2 ) on a non-reflecting surface is (c is…
- The electric field associated with an e.m. wave in vacuum is given by E = i 40 ( z-6 10^ 8 t ) , where E, z…
- The radiation pressure (in N/m 2 ) of the visible light is of the order of
- Assertion (A): UV radiation causes photo-dissociation of ozone into O 2 and O, thus causing damage to the…
- If v s , v x and v m are the speeds of gamma rays, X-rays and microwaves respectively in vacuum, then
More Electromagnetic Waves questions · Browse all practice questions