Physics · May / June 2024 · Paper 12 · Question 22
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.
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Correct answer: A. In a vacuum, infrared radiation travels at the speed of light.
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