$7)$ A spatially isothermal surface is maintained at a temperature of $120$ degrees $\backslash ($ C $\backslash ).$ Solar radiation with incident intensity $(1$ incident$)\backslash (=1050\backslash$mathrm$\{$~W$\}/\backslash$mathrm$\{$m$2\}\backslash ),$ is incident at the top of the surface. The surface has an area of $\backslash (2\mathrm{.}55\backslash$mathrm$\{$m$2\}\backslash ).$ The surface is opaque and diffuse and its spectral hemispherical absorptivity is given below. Determine $($i$)$ the absorbed irradiation $($ii$)$ the emissive power and $($iii$)$ the net radiation heat transfer from the surface.