AQA SUMMER 2026
PREDICTED PAPER
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatuure
I declare this is my own work.
A-level
PHYSICS
Paper 3
Section A
Time allowed: The total time for
both sections of this paper is
Materials 2 hours. You are advised to
For this paper you must have: spend approximately 70 minutes
• a pencil and a ruler
on this section.
• a scientific calculator
• a Data and Formulae Booklet
• a protractor
Instructions
• Use black ink or black ball-point pen. For Examiner’s Use
• Fill in the boxes at the top of this page.
• Answer all questions. Question Mark
• You must answer the questions in the spaces provided. Do not write 1
outside the box around each page or on blank pages. 2
• If you need extra space for your answer(s), use the lined pages at the end of
3
this book. Write the question number against your answer(s).
• Show all your working. 4
• Do all rough work in this book. Cross through any work you do not want TOTAL
to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 45.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
7408/3A for more: tyrionpapers.com
, 2
Do not write
outside the
Section A box
Answer all questions in the spaces provided.
0 1 A student investigates the interference of light using a double slit experiment. A laser
of unknown wavelength is directed at a double slit of separation s = 0.42 mm.
The student varies the distance D between the double slit and a white screen,
measuring the fringe width w each time by measuring across 10 fringes and dividing.
The experiment is repeated three times at each value of D.
Figure 1
0 1 . 1 Explain why the student measures across 10 fringes rather than a single fringe
width when determining w.
[1 mark]
for more: tyrionpapers.com
, 0 1 . 2 The student plots a graph of mean w against D.
Explain why this produces a straight line through the origin and state what quantity
the gradient represents.
[2 marks]
0 1 . 3 The gradient of the graph is 1.41 × 10⁻³ m. Calculate the wavelength of the laser
light and state whether this is consistent with visible light.
[3 marks]
wavelength of the laser=___________________m
for more: tyrionpapers.com
PREDICTED PAPER
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatuure
I declare this is my own work.
A-level
PHYSICS
Paper 3
Section A
Time allowed: The total time for
both sections of this paper is
Materials 2 hours. You are advised to
For this paper you must have: spend approximately 70 minutes
• a pencil and a ruler
on this section.
• a scientific calculator
• a Data and Formulae Booklet
• a protractor
Instructions
• Use black ink or black ball-point pen. For Examiner’s Use
• Fill in the boxes at the top of this page.
• Answer all questions. Question Mark
• You must answer the questions in the spaces provided. Do not write 1
outside the box around each page or on blank pages. 2
• If you need extra space for your answer(s), use the lined pages at the end of
3
this book. Write the question number against your answer(s).
• Show all your working. 4
• Do all rough work in this book. Cross through any work you do not want TOTAL
to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 45.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
7408/3A for more: tyrionpapers.com
, 2
Do not write
outside the
Section A box
Answer all questions in the spaces provided.
0 1 A student investigates the interference of light using a double slit experiment. A laser
of unknown wavelength is directed at a double slit of separation s = 0.42 mm.
The student varies the distance D between the double slit and a white screen,
measuring the fringe width w each time by measuring across 10 fringes and dividing.
The experiment is repeated three times at each value of D.
Figure 1
0 1 . 1 Explain why the student measures across 10 fringes rather than a single fringe
width when determining w.
[1 mark]
for more: tyrionpapers.com
, 0 1 . 2 The student plots a graph of mean w against D.
Explain why this produces a straight line through the origin and state what quantity
the gradient represents.
[2 marks]
0 1 . 3 The gradient of the graph is 1.41 × 10⁻³ m. Calculate the wavelength of the laser
light and state whether this is consistent with visible light.
[3 marks]
wavelength of the laser=___________________m
for more: tyrionpapers.com
