O-LevelPhysicsWaves5054/12 · May/June 2024 · Q221 Mark
Which statement about infrared radiation is correct?
AIn a vacuum, infrared radiation travels at the speed of light.
BInfrared radiation is a longitudinal wave.
CInfrared radiation has a higher frequency than ultraviolet radiation.
DWhite surfaces are better emitters of infrared radiation than black surfaces.
✓ Correct answer
A: In a vacuum, infrared radiation travels at the speed of light.
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