AAI ATC Junior Executive 21 Feb 2023 Shift 1 Paper
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Question : 72 of 120
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Which of the following statement(s) is/are NOT correct?
(i) Infrared radiation plays an important role in keeping the earth cool.
(ii) Infrared rays are emitted by certain semiconductor light-emitting diodes.
(iii) Water vapour is an excellent infrared ray trapper.
(iv) The thermal motion of the materials decreases after they absorb infrared rays.
(i) Infrared radiation plays an important role in keeping the earth cool.
(ii) Infrared rays are emitted by certain semiconductor light-emitting diodes.
(iii) Water vapour is an excellent infrared ray trapper.
(iv) The thermal motion of the materials decreases after they absorb infrared rays.
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