aqa
Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
A-level
PHYSICS
Paper 3
Section B Astrophysics
7408/3BA
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
a Data and Formulae Booklet 50 minutes on this section.
a protractor.
For Examiner’s Use
Instructions
Questio Mark
Use black ink or black ball-point pen. n
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 The maximum mark
not write outside the box around each page or on blank 3for this paper is 35.
pages. 4You are expected to
If you need extra space for your answer(s), use the lined pages at 5use a scientific
the end of this book. Write the question number against your calculator where
answer(s). TOTAL
appropriate.
Do all rough work in this book. Cross through any work you do A Data and Formulae
not want to be marked. Booklet is provided
Show all your working. as a loose insert.
Information
The marks for questions are shown in brackets.
final
,final
, 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]
Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
A-level
PHYSICS
Paper 3
Section B Astrophysics
7408/3BA
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
a Data and Formulae Booklet 50 minutes on this section.
a protractor.
For Examiner’s Use
Instructions
Questio Mark
Use black ink or black ball-point pen. n
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 The maximum mark
not write outside the box around each page or on blank 3for this paper is 35.
pages. 4You are expected to
If you need extra space for your answer(s), use the lined pages at 5use a scientific
the end of this book. Write the question number against your calculator where
answer(s). TOTAL
appropriate.
Do all rough work in this book. Cross through any work you do A Data and Formulae
not want to be marked. Booklet is provided
Show all your working. as a loose insert.
Information
The marks for questions are shown in brackets.
final
,final
, 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]
