Figure 1 is a simplified Hertzsprung-Russell (H-R) diagram showing the relationship between the luminosity and surface temperature of main sequence stars.
Luminosity is measured relative to the Sun (where the Sun has a value of 1).
Estimate the surface temperature of the star Sirius A using Figure 1.
Stellar evolution and observing the Universe Questions
Practise Edexcel GCSE Physics Stellar evolution and observing the Universe with exam-style questions for Foundation and Higher tier. 53 questions, matched to the Edexcel GCSE Physics (1PH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.