Exam (elaborations)
aqa A-level PHYSICS Paper 1 (7408/1) Question Paper May2023
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aqa A-level PHYSICS Paper 1 (7408/1) Question Paper May2023
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aqaPlease write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate re
signatu
A-level
PHYSICS
Paper 1
Wednesday 24 May 2023 Afternoon Time allowed: 2 hours
Materials
For Examiner’s Use
For this paper you must have:
a pencil and a ruler Questio Mark
a scientific calculator n
a Data and Formulae Booklet 1
a protractor. 2
3
Instructions
Use black ink or black ball-point pen. 4
Fill in the boxes at the top of this page. 5
Answer all questions. 6
You must answer the questions in the spaces provided. Do
7–31
not write outside the box around each page or on blank
pages. TOTAL
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.
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.
verified
, 7408/1
verified
, 2
Do not write
outside the
Section A box
Answer all questions in this
section.
The0neutral
1 lambda particle Λ0 is a baryon with a strangeness of −1
One possible decay for a Λ0 is
0 0 + n
0 1 .1 Deduce the quark structure of
aΛ.0
[1 mark]
0 1 .2 State and explain which interaction is involved in this decay.
[2 marks]
0 1 .3 An antiparticle of the neutral lambda particle decays into a neutral pion and particle
X.
Identify X.
[1 mark]
*02
*
, 3
Do not write
outside the
0 1 .4 The rest energy of a Λ0 is equal to the energy of a photon with a box
frequency of 2.69 × 1023 Hz.
Determine, in MeV, the rest energy of a Λ0.
[1
mark]
rest energy MeV
=
0 1 .5 The discovery of particles such as the Λ0 is made by large
international research teams.
Suggest one reason for this.
[1 mark]
6
Turn over for the next question
*03
*
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