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MCQIntermediateCosmology & Galaxies
IAAC — 2022 Final Round
Question 14
An object emits light at a wavelength of 200 nanometers. You receive the light at 1000 nanometers. What is the redshift z?
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Source
Source: International Astronomy and Astrophysics Competition (IAAC), Final Round 2022. Question wording and answer-choice text are transcribed from the official training PDF; the explanation and metadata are original.