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*JUN207408101*
IB/M/Jun20/E11 7408/1
For Examiner’s Use
Question Mark
1
2
3
4
5
6–30
TOTAL
Monday 18 May 2020 Afternoon Time allowed: 2 hours
Materials
For this paper you must have:
x a pencil and a ruler
x a scientific calculator
x a Data and Formulae Booklet.
Instructions
x Use black ink or black ball-point pen.
x Fill in the boxes at the top of this page.
x Answer all questions.
x You must answer the questions in the spaces provided. Do not write
outside the box around each page or on blank pages.
x 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).
x Do all rough work in this book. Cross through any work you do not want
to be marked.
x Show all your working.
Information
x The marks for questions are shown in brackets.
x The maximum mark for this paper is 85.
x You are expected to use a scientific calculator where appropriate.
x A Data and Formulae Booklet is provided as a loose insert.
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
PHYSICS
Paper 1
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2
*02*
IB/M/Jun20/7408/1
Section A
Answer all questions in this section.
0 1 . 1 Determine whether the following reaction is a possible decay for the neutral pion ʌ0
.
ʌ0
ĺ eí + ȝ+ + ve
[2 marks]
0 1 . 2 State the two possible quark configurations of a ʌ0
.
[1 mark]
1
2
0 1 . 3 A student suggests that the kaon K0 and the anti-kaon K
തതത0ത are the same particle.
Discuss whether this suggestion is correct.
[2 marks]
Do not write
outside the
box
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3
*03*
Turn over Ź
IB/M/Jun20/7408/1
Do not write
outside the
0 1 box . 4 The nucleus is held together by a force. It was predicted that a particle exists that is
responsible for this force. The particle itself must experience this force.
The particle would have a rest energy between that of an electron and half that of a
nucleon.
Discuss whether a kaon, a muon and a pion each have the properties of the predicted
particle.
Information about these three particles is in the Data and Formulae Booklet.
[4 marks]
Turn over for the next question
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Version | 2021 |
Category | AQA Questions and Marking Scheme |
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Language | English |
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