For a glass plate transmissivity and reflectivity are specified

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For a glass plate transmissivity and reflectivity are specified as 0.86 and 0.08 respectively, the absorptivity of the glass plate is

1. 0.86
2. 0.08
3. 1.00
4. 0.06

Correct Option: D

τ = 0.86
ρ = 0.08
α = ?
α + τ + ρ = 1
α + 0.86 + 0.08 = 1
α = 0.06