Question

Which of the following is not ionizing radiation?
(a)Alpha rays
(b)Infrared
(c)U.V rays
(d)Both B and C

Answer 1

Hint: It is any kind of radiation in the electromagnetic spectrum that does not have enough energy to remove an electron from an atom and turn it into an ion. This contrasts with radiation like x-rays, gamma rays, and alpha particles, which come from the opposite end of the spectrum and are unstable and reactive.

Complete answer:
Non-ionizing radiations are the low energy electromagnetic waves that cannot ionize the electrons from atoms or molecules. Common examples of this kind of radiation are ultraviolet, visible light, infrared, microwave, and radio waves.

Additional information:
Ultraviolet (UV) radiation originates from the sun, welding, dark lights, and UV lasers. The sun emits UVA, UVB, and UVC rays. UVC rays are absorbed by the ozonosphere and never actually reach the world. Both UVA and UVB light are important for humans within the production of vitamin D. However, the consequences of overexposure to UV rays are often negative and may be immediate or delayed. Sunburn, carcinoma, and cataracts develop over time with excessive exposure.
The human eye can’t see most of the IR spectrum, but we will feel it as heat. IR radiation is used in furnaces, heat lamps, toasters, night-vision goggles, and the lasers seen on the TV remote controls. About half the entire energy the sun gives off is within the sort of IR radiation, which we feel as heat. In large amounts, this sort of radiation can damage the eyes and even cause blindness.

So the correct answer to the above question is ‘Both B and C’.

Note: IR radiation from the sun is normally absorbed by the Earth’s surface and the clouds, then released as heat into the atmosphere. When the atmosphere features a lot of water vapor, alongside nitrogen, sulfur, and fluorocarbons, the IR radiation gets trapped and causes the atmospheric temperature to rise. This is called the greenhouse effect. Temperature increases like this cause changes in the weather patterns on Earth and leads to climate change