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MCQIntermediateStars & Stellar Evolution

USAAAO — 2021 First Round

Question 11

Let Td,C and Td,S be the temperatures at the core and the surface of the sun, respectively. Similarly, let TA,C and TA,S be the temperatures at the core and surface of the red giant Arcturus, and let TS,C and TS,S be the temperatures at the core and surface of the white dwarf Sirius B. Which of the following inequalities is true?

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Source

USAAAO 2021 First Round. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.