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The Stefan law says the energy flux of a blackbody depends on temperature raised to the power:
A3
B5
C4
D2
Answer & Solution
Correct answer: C. 4
1. Summing every wavelength gives the total energy.
2. That total climbs very steeply with temperature.
3. It goes as the 4th power.
_Source: OpenStax Astronomy 2e, Chapter 5, Radiation and Spectra._
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