O-LevelPhysicsThermal Physics5054/12 · Oct/Nov 2025 · Q241 Mark
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?
Ablack and dull surface
Bblack and shiny surface
Cwhite and dull surface
Dwhite and shiny surface
✓ Correct answer
A: black and dull surface
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