← all questions · Physics · 0625 · Paper 3
The speed of visible light waves in a vacuum is 3.0 × 10⁸ m/s.
State the value for the speed of infrared waves in a vacuum.
0625/03/SP/23Cambridge IGCSE Physics 0625 · Specimen 2023 · Paper 3 · Question 9(a)(ii)
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Suggested time: 2 min