Question

How are infrared waves produced? Why are these referred to as ‘heat waves’? Write their one important use.​

Answer 1

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• The primary source of infrared radiation is heat or thermal radiation, any object which has a temperature radiates in the infrared. Even objects that we think of as being very cold, such as an ice cube, emit infrared. The warmer the object, the more infrared radiation it emits.
• They are referred as heat waves because they are readily absorbed by water molecules in most materials, which increase their thermal motion, so they heat up the material.
• Infrared waves are used for therapeutic purpose and long distance photography.

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Answer 2

Answer:

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$\Large{\underline{\underline{\bf{Question:\ How:\ are:\ infrared:\ waves:\ produced? Why:\ are:\ these:\ referred:\ to:\ as:\ ‘heat waves’?:-}}}}$

➝Infrared rays are produced by hot bodies and molecules. This may involve vibration and bending of molecules. Infrared band lies adjacent to low-frequency or long-wavelength end of the visible spectrum. Infrared waves are sometimes referred to as heat waves

$\Large{\underline{\underline{\bf{Question:\ Write:\ their:\ one:\ important:\ use.:-}}}}$

Use➝Infrared rays are used to take photographs in darkness. These are also used to study secret writing. They are also used in physical therapy.