2023 AQA A-level PHYSICS 7408/3BA Paper 3 Section B Astrophysics Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA A-level PHYSICS 7408/3BA Paper 3 Section B Astrophysics Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] A-level PHYSICS Paper 3 Section B Astrophysics Thursday 15 June 2023 Morning Time allowed: The total time for Materials both sections of this paper is For this paper you must have: 2 hours. You are advised to • a pencil and a ruler spend approximately • a scientific calculator 50 minutes on this section. • a Data and Formulae Booklet • a protractor. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • Do all rough work in this book. Cross through any work you do not want to be marked. • Show all your working. For Examiner’s Use Question Mark 1 2 3 4 5 TOTAL Information • The marks for questions are shown in brackets. • The maximum mark for this paper is 35. • You are expected to use a scientific calculator where appropriate. • A Data and Formulae Booklet is provided as a loose insert. *JUN2374083BA01* IB/M/Jun23/E9 7408/3BA 2 Section B Answer all questions in this section. 0 1 . 1Draw a labelled diagram to define the parsec (pc). [1 mark] Table 1 shows data for two stars: Rigel and the Sun. Table 1 Star Surface temperature / K Absolute magnitude Mass / kg Rigel 12 000 −7.84 3.6 × 1031 Sun 5700 4.83 2.0 × 1030 0 1 . 2 State the spectral class of Rigel. [1 mark] Do not write outside the box *02* IB/M/Jun23/7408/3BA 3 0 1 . 3The apparent magnitude of Rigel is 0.11 Calculate, in pc, the distance from Rigel to the Earth. [2 marks] distance = pc Question 1 continues on the next page Turn over ► *03* Do not write outside the box IB/M/Jun23/7408/3BA 4 0 1 . 4 Figure 1 shows a Hertzsprung–Russell (HR) diagram. Figure 1 Draw a line on Figure 1 to show the evolution of the Sun from formation to white dwarf. [1 mark] 0 1 . 5 One stage in the evolution of Rigel includes the emission of a gamma ray burst. Outline the circumstances during which a gamma ray burst will be emitted by Rigel.