Exam-style question
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APPARENT BRIGHTNESS case: Which option best applies the AQA A-Level Physics objective "Relate parsec to parallax angle." in Absolute magnitude using the relevant astronomical observation rather than a generic calculation?.
- A.astro-220-apparent-brightness: Use Relate parsec to parallax angle. in Absolute magnitude.
- B.astro-220-apparent-brightness: Swap Absolute magnitude with a different Classification of stars method.
- C.astro-220-apparent-brightness: Give a number or label without linking it to the astronomical evidence.
- D.astro-220-apparent-brightness: Ignore the observation and use a generic star or telescope statement.
Model answer
What a good answer should say
- The correct option is astro-220-apparent-brightness: Use Relate parsec to parallax angle.
- in Absolute magnitude.
Explanation
Why this works
It is correct because the apparent brightness context supports relate parsec to parallax angle. The distractors are weaker because they confuse observational evidence, distance scale, spectra, telescope resolution, brightness or cosmological reasoning with a nearby but different astrophysics idea.
Common mistake
No common mistake is linked to this question yet.