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MCQIntermediateLight, Radiation & Spectroscopy

USAAAO — 2020 First Round

Question 3

Hα is a prominent absorption line in the Sun’s spectrum with λ = 656.281 nm. For an observer on α-Centauri, assuming the Jupiter-Sun orbital plane is in the line of sight, calculate the magnitude of the periodic shift in wavelength for the Hα line.

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Source

Source: USAAAO 2020 First Round, Question 3.