The distance of the Earth from the Sun is 4 times that of the planet Mercury from the Sun. The temperature of the Earth in radiative equilibrium with the Sun is 290 K . Find the radiative equilibrium temperature of the Mercury (in Kelvin). Assume all three bodies to be the black bodies.
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answer is 580.00.
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Detailed Solution
Preceived=πRp2Psun4πrs2Pemitted=σe4πRp2Tp4In equilibrium, Pr=Pe⇒Tp2 ∝1rs⇒TearthTmercury=rmercuryrearth⇒290Tmercury=14⇒Tmercury=580 K