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MCQIntermediateExoplanets & Stellar Systems
USAAAO — 2021 First Round
Question 22
Consider an eclipsing binary star system observed (in some fixed band) to have a combined apparent magnitude of 5.67. During the secondary transit, the second star is totally eclipsed by the first star, and the apparent magnitude dims to 6.28. What percent of the combined flux is produced by the second star?
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Source
USAAAO 2021 First Round. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.