As we know, the range of wavelength of visible radiation is from 400 nm to 700 nm. The radiation having wavelength greater than 700 nm is termed as infra-red radiations which only produces warmth, so the wavelength of radiation 850 nm cannot be visible.
Because of strong immune system our body is normally fighting off microbes. We have cells which are specialised to kill the pathogenic microbes. These cells are active when infecting microbes...
(a) If we go on cutting trees then:
(i) Earth will lose its top fertile soil layer and get converted into desert.
(ii) The ecological balance will get disturbed and floods and...
Solution:
HCF(850, 680) will give the maximum
capacity of container.
850 = 680 x 1 + 170
680 = 170 x 4 + 0
So, HCF (850, 680) = 170
Therefore, the maximum capacity of a container...
Allergy. Mast Cells are responsible for such reactions.
To avoid such reactions following precautions must be taken.
(i) The use of drugs like antihistamine, adrenalin and steroids quickly reduce the symptoms of allergy.
(ii)...
