Physics · Thermal Radiation
For an opaque body, the relation between absorptivity α, reflectivity ρ, and transmissivity τ is:
- 1ρ + τ = 1
- 2α + τ = 1
- 3α + ρ = 1✓
- 4α + ρ + τ = 0
Correct answer
α + ρ = 1
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