Physics · Oct / Nov 2025 · Paper 12 · Question 25
5054Radiation
Four copper spheres have identical surface colours and identical surface textures. They have different surface temperatures and surface areas. Which sphere emits infrared radiation at the greatest rate?
- A500, 120
- B500, 480
- C1000, 120
- D1000, 480
As printed in the paper
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Correct answer: D. 1000, 480
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