AQA A LEVEL PHYSICS PAPER 1 QP 2020

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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:

• a pencil and a ruler

• a scientific calculator

• a Data and Formulae Booklet.

Instructions

• Use black ink or black ball-point pen.

• Fill in the boxes at the top of this page.

• Answer all questions.

• You must answer the questions in the spaces provided. Do not write

outside the box around each page or on blank 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.

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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*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 π0

.

 π0

 → e− + μ+ + ve

[2 marks]

0 1 . 2 State the two possible quark configurations of a π0

.

[1 mark]

1

2

0 1 . 3 A student suggests that the kaon K0 and the anti-kaon K

���0� 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 ►

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

9

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