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MCQAdvancedTelescopes, Instruments & Observing
IAAC — 2021 Final Round
Question 18
The diameter of the lens’ aperture of your telescope is 5 m and you observe at a wavelength of 1000 nm. What is the resolution of this telescope? [Answer choices updated to restore the negative exponents and units missing from the original exam.]
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Source
Source: International Astronomy and Astrophysics Competition (IAAC), Final Round 2021. Question wording and answer-choice text are transcribed from the official training PDF; the explanation and metadata are original. Needs mathematical/typographical review: preserve the official answer key, but verify the source’s printed units and exponents.