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For a Main-Sequence Star with the Same Radius as the Sun

Question 109

Multiple Choice

For a main-sequence star with the same radius as the Sun, a surface temperature of 5000 K gives about half the Sun's luminosity. What would a surface temperature of 20,000 K give for the approximate luminosity of a solar mass star?


A) 0.5 L⊙L_{\odot}
B) 4 L⊙L_{\odot}
C) 16 L⊙L_{\odot}
D) 140 L⊙L_{\odot}

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