2025 · O/N · 5054/12 | Q24

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CIE-5054-2025-ON-p12 · Question 24

You may use a calculator. Take the weight of 1.0 kg to be 9.8 N (acceleration of free fall = 9.8 m/s²).
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24 Energy can be transferred by thermal radiation. Four surfaces have different colours and textures. The surfaces are at equal temperatures and have equal surface areas. Which surface transfers energy by thermal radiation at the fastest rate? A black and dull surface B black and shiny surface C white and dull surface D white and shiny surface

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5054/12/O/N/25Cambridge O Level Physics 5054 · Oct/Nov 2025 · Paper 1 variant 2 · Question 24