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MCQBeginnerLight, Radiation & Spectroscopy
USAAAO — 2023 First Round
Question 20
Suppose that an astronomer detects an electromagnetic wave of frequency ν. Some time later, another wave with the same amplitude is received, but now with a frequency 2ν. In order to calibrate the apparatus and do the necessary calculations, the astronomer decided to calculate the intensity of the second signal relative to the first. Considering that they both came from the same place, what value did the astronomer obtain?
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Source
USAAAO 2023 First Round. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.