Answer:
3.9°C
Step-by-step explanation:
solution:
we express the surface temperature from the quality of the emitted and absorbed heat rates:

εσA


![\sqrt[4]{}](https://img.qammunity.org/2021/formulas/engineering/college/87zkin7efptxv6sfmcxawpo4w24wea2n6c.png)
/εσ*
........................(1)
where
=0.2
ε=0.6
A=5.67*10^-8 W/m^2K^4
= 1000 W/m^2
now putting these value in eq 1
3.9°C