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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
both sections of this paper is
Materials
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.
For Examiner’s Use
Instructions
Question Mark
• Use black ink or black ball-point pen.
• Fill in the boxes at the top of this page. 1
• Answer all questions. 2
• You must answer the questions in the spaces provided. Do not write 3
outside the box around each page or on blank pages.
4
• 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). 5
• Do all rough work in this book. Cross through any work you do not want
TOTAL
to be marked.
• Show all your working.
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
Do not write
outside the
Section B box
Answer all questions in this section.
0 1.1 Draw 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]
*02*
IB/M/Jun23/7408/3BA
, 3
Do not write
outside the
0 1.3 The apparent magnitude of Rigel is 0.11 box
Calculate, in pc, the distance from Rigel to the Earth.
[2 marks]
distance = pc
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun23/7408/3BA
, 4
Do not write
outside the
0 1 . 4 Figure 1 shows a Hertzsprung–Russell (HR) diagram. box
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.
[2 marks]
7
*04*
IB/M/Jun23/7408/3BA
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