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Question 40

From Physics HL Paper 1A (May 2025, TZ3)

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  1. X is a star of luminosity LL and apparent brightness bb. Y is a star of luminosity LL and apparent brightness 2b2b.
    As viewed from Earth, what is parallax angle subtended by Xparallax angle subtended by Y\frac{\text{parallax angle subtended by X}}{\text{parallax angle subtended by Y}}?

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Mixed-topic question
25.2 Stellar Properties and the Hertzsprung-Russell DiagramStellar parallax and astronomical distance · legacy topic