The earth is getting energy from the sun whose surface temperature is $T_{\mathit{s}}$ and radius is$\mathit{ }R$. Let the radius of the earth the $r$ and the distance from the sun be $d$. Assume the earth and the sun both to behave as perfect black bodies and the earth is in thermal equilibrium at a constant temperature $T_{\mathit{e}}$. Therefore, the temperature $T_{\mathit{s}}$ of the sun is $x{T}_{\mathit{e}}$ where $x$ is-

The plots of intensity v/s wavelength for three black bodies at temperatures $T_1, T_2$ and $T_3$ respectively are as shown. Their temperatures are such that-

The temperature of bodies $X$ and $Y$ vary with time as shown in the figure. If emissivity of bodies $X$ and $Y$ are $e_{\mathit{X}}$ and $e_{\mathit{Y}}$ and absorptive powers are $A_{\mathit{X}}$ and $A_{\mathit{Y}}$, (assume other conditions are identical for both) then:

Three graphs marked as $1, 2, 3$ representing the variation of maximum emissive power and wavelength of radiation of the sun, a welding arc and a tungsten filament. Which of the following combination is correct?