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How are infrared waves produced ? Why ar...

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

Text Solution

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Method of production :
By hot bodies and molecules / due to vibrations of atoms and molecules / due to transition of electrons between two (closely spaced) energy levels in an atom. Infrared waves are called heat waves as they cause heating effect/ rise in temperature.
Any one use : Maintains earth.s warmth, physical therapy, remote switches etc.
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