Assume that a planet and the star it orbits can both be thought of as perfect black bodies. 5. the surface temperature of the star is t, and that of the planet

Assume that a planet and the star it orbits can both be thought of as perfect black bodies. 5. The surface temperature of the star is T, and that of the planet is Tp. Suppose thereis another star-planet system identical in all respects but for the two temperature. If the surface temperature of the other star is T2, the surface temperature of its planet is (a) Tp (d)