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MCQBeginnerLight, Radiation & Spectroscopy
IAAC — 2023 Final Round
Question 20
The colour of light with a wavelength of 700 nanometers is ...
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Source
Source: International Astronomy and Astrophysics Competition (IAAC), Final Round 2023. Question wording and answer-choice text are transcribed from the official training PDF; the explanation and metadata are original.