 Solution

ID: past-exam-of-the-short-options-paper-shared-by-prelims-and-parts-a-and-b-of-the-physics-course-of-the-university-of-oxford/2016/s29/1/3/solution

For

F_{S} = 1360

^{- 2}

and emissivity one, the estimates are

T_{e q, \oplus} ≃ 254 K, T_{e q, Moon} ≃ 270 K, T_{e q, Io} ≃ 99 K, T_{e q, Jupiter} ≃ 111 K .

These are effective fourth-power averages set by absorbed sunlight, not automatic surface thermometer readings. Uncertainty in actual albedo, emissivity and redistribution changes a more detailed model.

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