Infrared radiations are also known as heat waves. Why? Also, name the radiation that are next to infrared radiation with (a) Shorter wavelength (b) Longer wavelength

When materials are exposed to the infrared radiation, the water molecules of the material absorb this radiation. This results in the increase of thermal motion of the water molecules in that material. This is the reason why infrared radiations are also known as heat waves.

(a) Visible light has a shorter wavelength after infrared radiation.

(b) Microwaves have a longer wavelength next to infrared radiation.

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