Star X has a radius of and the same surface temperature as Star Y

PHYSICS · Subjective · IB Diploma Programme · Physics · The greenhouse effect · The greenhouse effect

Problem

Star X has a radius of 3.0 R⊙3.0\,R_{\odot} and the same surface temperature as Star Y, whose radius is 1.0 R⊙1.0\,R_{\odot}. Determine the ratio of their luminosities LX/LYL_X/L_Y.

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