X and Y are two spherical black‑body radiators. X has radius R and emits half the total power of Y. The absolute temperature of X is double that of Y. What is the radius of Y?
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Physics HL Paper 1A (May 2025, TZ2)
Physics HL Paper 1A (May 2025, TZ2)
X and Y are two spherical black‑body radiators. X has radius R and emits half the total power of Y. The absolute temperature of X is double that of Y. What is the radius of Y?