Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
signat
A-level
PHYSICS
Paper 1
Monday 18 May 2020 Afternoon Time allowed: 2 hours
Materials For Examiner’s Use
For this paper you must have:
Questio Mark
a pencil and a ruler
n
a scientific calculator
1
a Data and Formulae Booklet.
2
Instructions 3
Use black ink or black ball-point pen. 4
Fill in the boxes at the top of this page. 5
Answer all questions.
6–30
You must answer the questions in the spaces provided. Do
not write outside the box around each page or on blank TOTAL
pages.
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.
,*JUN20740101*
IB/M/Jun20/E11 7408/1
, 2
Do not
write
Section A outside the
box
Answer all questions in this
section.
0 1 .1 Determine whether the following reaction is a possible decay for the neutral pion π0.
π0 → e− + μ+ + ve
[2 marks]
0 1 .2 State the two possible quark configurations
of a π .
0
[1 mark]
1
2
0 1 .3 � �0
A student suggests that the kaon K0 and the anti-kaon K are the same particle.
Discuss whether this suggestion is correct.
[2 marks]
*02
IB/M/
* Jun20/7408/1
, 3
Do not
write
0 1 .4 The nucleus is held together by a force. It was predicted that a particle outside
box the
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]
9
Turn over for the next question
*03
IB/M/
* Jun20/7408/1
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
signat
A-level
PHYSICS
Paper 1
Monday 18 May 2020 Afternoon Time allowed: 2 hours
Materials For Examiner’s Use
For this paper you must have:
Questio Mark
a pencil and a ruler
n
a scientific calculator
1
a Data and Formulae Booklet.
2
Instructions 3
Use black ink or black ball-point pen. 4
Fill in the boxes at the top of this page. 5
Answer all questions.
6–30
You must answer the questions in the spaces provided. Do
not write outside the box around each page or on blank TOTAL
pages.
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.
,*JUN20740101*
IB/M/Jun20/E11 7408/1
, 2
Do not
write
Section A outside the
box
Answer all questions in this
section.
0 1 .1 Determine whether the following reaction is a possible decay for the neutral pion π0.
π0 → e− + μ+ + ve
[2 marks]
0 1 .2 State the two possible quark configurations
of a π .
0
[1 mark]
1
2
0 1 .3 � �0
A student suggests that the kaon K0 and the anti-kaon K are the same particle.
Discuss whether this suggestion is correct.
[2 marks]
*02
IB/M/
* Jun20/7408/1
, 3
Do not
write
0 1 .4 The nucleus is held together by a force. It was predicted that a particle outside
box the
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]
9
Turn over for the next question
*03
IB/M/
* Jun20/7408/1
