Physics · Heat Transfer
A grey body has an emissivity coefficient ε and radiates heat according to the Stefan-Boltzmann Law. What does the value of ε represent?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The thermal conductivity of the body
- 2The ratio of the emissive power of the body to that of a black body at the same temperature✓
- 3The surface temperature of the radiating body
- 4The total heat energy radiated per unit area
Correct answer
The ratio of the emissive power of the body to that of a black body at the same temperature
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