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MCQBeginnerLight, Radiation & Spectroscopy
USAAAO — 2023 First Round
Question 4
The Sun has a surface temperature of about 6000 K and its blackbody emission peaks in the visible spectrum. Around 1940s, astronomers found out that the Sun is a strong X-ray emitter. Today, it is understood that this emission comes from the solar corona where temperatures can reach on the order of 106 K. Assuming the corona is a blackbody emitter, what wavelength would that emission peak at?
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Source
USAAAO 2023 First Round. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.