Which radiations are used for the following:
(a) for sterilizing purpose
(b) producing vitamin D in the food of plants and animals.
(c) signals during war
(d) remote control of TV
(e) radar communication
(f) night photography
(g) detection of fracture in bones
(h) welding defects in metals
(i) detecting the purity of gems, eggs, ghee etc.
(j) to kill cancer cell
(k) analysis of atomic and molecular structure.
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Answer:
D Romote control of T.V
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Answer: (A)There are 2 general types of radiation used for sterilization, ionizing radiation and non-ionizing radiation
Explanation:(A)Ionizing radiation is the use of short wavelength, high-intensity radiation to destroy microorganisms. This radiation can come in the form of gamma or X-rays that react with DNA resulting in a damaged cell. Non-ionizing radiation uses longer wavelength and lower energy. As a result, non-ionizing radiation loses the ability to penetrate substances, and can only be used for sterilizing surfaces. The most common form of non-ionizing radiation is ultraviolet light, which is used in a variety of manners throughout industry.
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