AQA-7408-1-PHYSICS QUESTION PAPER 1-A LEVEL-24May24-AM
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Course
AQA PHYSICS
Institution
AQA PHYSICS
AQA-7408-1-PHYSICS QUESTION PAPER 1-A LEVEL-24May24-AM.
Section A box
Answer all questions in this section.
0 1 . 1 State the names of the four fundamental interactions.
[1 mark]
1
2
3
4
0 1 . 2 State the products of the decay of a free neutron.
[1 mark]
0 1 . 3 Explain which of the...
Candidate signature
I declare this is my own work.
A-level
PHYSICS
S
Paper 1
IC
Friday 24 May 2024 Morning Time allowed: 2 hours
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Materials For Examiner’s Use
For this paper you must have:
• a pencil and a ruler Question Mark
• a scientific calculator 1
• a Data and Formulae Booklet
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2
• a protractor.
3
Instructions 4
• Use black ink or black ball-point pen. 5
• Fill in the boxes at the top of this page.
6
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write 7
outside the box around each page or on blank pages. 8–32
• 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). TOTAL
• Do all rough work in this book. Cross through any work you do not want
to be marked.
• Show all your working.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 85.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
IB/M/Jun24/E10 7408/1
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outside the
Section A box
Answer all questions in this section.
0 1 . 1 State the names of the four fundamental interactions.
[1 mark]
1
2
3
4
0 1 . 2 State the products of the decay of a free neutron.
[1 mark]
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0 1 . 3
IC
Explain which of the fundamental interactions is responsible for the decay of the
neutron.
[2 marks]
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0 1 . 4 The forces between two moving electrons cause their paths to change.
Explain, using the concept of exchange particles, why the electron paths change.
[3 marks]
7
*02*
IB/M/Jun24/7408/1
Page 2 of 36
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3
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outside the
0 2 A positive pion collides with a neutron and the following interaction is observed: box
π+ + n → Κ + + Σ0
Σ0 is a neutral sigma particle with a strangeness of −1
The interaction can be used to deduce the classifications of the Σ0.
0 2 . 1 Identify the classifications of each particle in Table 1.
Tick () the appropriate boxes for each particle.
[2 marks]
Table 1
Particle Baryon Hadron Lepton Meson
π+
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n IC
K+
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Σ0
0 2 . 2 A conservation rule predicts that the following interaction cannot occur:
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π− + n → Κ − + Σ0
State the conservation rule.
Go on to explain your answer.
[3 marks]
Question 2 continues on the next page
Turn over ►
*03*
IB/M/Jun24/7408/1
Page 3 of 36
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One way in which neutral pions decay is
π0 → e− + e+ + γ
0 2 . 3 Compare the rest energies of the particles involved in this decay.
[2 marks]
0 2 . 4 The decay of the neutral pion leads to the production of further gamma photons.
Explain why.
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[1 mark]
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0 2 . 5 The Standard Model is a theory that classifies elementary particles.
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Evidence for the theory has been collected since about 1950. However, the term
Standard Model has only been used since 1973.
Suggest why progress in particle physics is slow.
[1 mark]
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9
*04*
IB/M/Jun24/7408/1
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