Physics · Electromagnetic Waves
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.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both (i) and (ii)
- 2Both (ii) and (iii)
- 3Both (iii) and (iv)
- 4Both (i) and (iv)✓
Correct answer
Both (i) and (iv)
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