Physics: ASTROPHYSICS Topical Past Paper Questions
IB Diploma Programme Physics past-paper questions on ASTROPHYSICS, free. This topic is occasionally examined across 17 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
The galaxy NGC 6251 is 350Mly from Earth and has a redshift of 0.025. (a) Show that the NGC 6251 data lead to an estimate for the Hubble constant of about $ 70\ \mathrm{km}\ \mathrm{s}^{-1}\ \mathrm{Mpc}^{-1} $. (b) (i) Estimate, using your answer to (a), the age of the universe…
The data for the star Eta Aquilae A are given in the table. $ L_{\odot} $ is the luminosity of the Sun and $ M_{\odot} $ is the mass of the Sun. (a) Show by calculation that Eta Aquilae A is not on the main sequence. [2] [2] (b) Estimate, in pc, the distance to Eta Aquilae A (i)…
(a) (i) Outline how the light spectra of distant galaxies are used to confirm hypotheses about the expansion of the universe. (ii) Light from a hydrogen source in a laboratory on Earth contains a spectral line of wavelength 122 nm. Light from the same spectral line reaching Earth…
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