2025 AQA A-level PHYSICS Paper 3 Section A Combined Question Paper & Final Marking Scheme
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 3
Section A
Tuesday 17 June 2025 Morning Time allowed: The total time for
both sections of this paper is
Materials
For this paper you must have:
2 hours. You are advised to
a pencil and a ruler spend approximately
a scientific calculator 70 minutes on this section.
a Data and Formulae Booklet
a protractor.
Instructions For Examiner’s Use
Use black ink or black ball-point pen.
Question Mark
Fill in the boxes at the top of this page.
Answer all questions. 1
You must answer the questions in the spaces provided. Do not write 2
outside the box around each page or on blank pages. 3
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). 4
Do all rough work in this book. Cross through any work you do not want TOTAL
to be marked.
Show all your working.
Information
The marks for 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.
7 4 0 8 /3A
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IB/M/Jun25/G4006/E15
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1 This question is based on an investigation into how the frequency of the first-harmonic
stationary wave on a string varies with tension (required practical activity 1).
Figure 1 shows the arrangement for this investigation.
Figure 1
The tension in the string is equal to the weight mg of the total mass m tied to
the string.
The frequency is changed until the first-harmonic stationary wave appears on the
string. This frequency f is determined using the oscilloscope.
The process is repeated for different values of m.
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, 3
Do not write
outside the
0 1 . 1 Identify two control variables for the arrangement shown in Figure 1. box
You may annotate Figure 1 as part of your answer.
[2 marks]
1
2
0 1 . 2 The total mass m is made from a mass hanger and up to three slotted masses.
One 20 g, one 50 g and one 100 g slotted mass are provided.
The hanger has a mass of 100 g.
The hanger must not be removed from the string.
Which statement is correct?
Tick () one box.
[1 mark]
m has a maximum range of 170 g.
m has a maximum of 7 different values.
m values are evenly distributed across the range.
Question 1 continues on the next page
Turn over ►
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IB/M/Jun25/7408/3A
, 4
Do not write
outside the
box
The frequency f is calculated using the waveform displayed on the oscilloscope.
Figure 2 shows the waveforms displayed on the oscilloscope when m = 100 g and
when m = 200 g.
Figure 2
m = 100 g
m = 200 g
The y-voltage gain setting is 5 V div−1.
The time-base setting is 20 ms div−1.
for more: tyrionpapers.com
IB/M/Jun25/7408/3A
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 3
Section A
Tuesday 17 June 2025 Morning Time allowed: The total time for
both sections of this paper is
Materials
For this paper you must have:
2 hours. You are advised to
a pencil and a ruler spend approximately
a scientific calculator 70 minutes on this section.
a Data and Formulae Booklet
a protractor.
Instructions For Examiner’s Use
Use black ink or black ball-point pen.
Question Mark
Fill in the boxes at the top of this page.
Answer all questions. 1
You must answer the questions in the spaces provided. Do not write 2
outside the box around each page or on blank pages. 3
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). 4
Do all rough work in this book. Cross through any work you do not want TOTAL
to be marked.
Show all your working.
Information
The marks for 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.
7 4 0 8 /3A
for more: ty rion pa per s.co m
IB/M/Jun25/G4006/E15
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1 This question is based on an investigation into how the frequency of the first-harmonic
stationary wave on a string varies with tension (required practical activity 1).
Figure 1 shows the arrangement for this investigation.
Figure 1
The tension in the string is equal to the weight mg of the total mass m tied to
the string.
The frequency is changed until the first-harmonic stationary wave appears on the
string. This frequency f is determined using the oscilloscope.
The process is repeated for different values of m.
for more: tyrionpapers.com
IB/M/Jun25/7408/3A
, 3
Do not write
outside the
0 1 . 1 Identify two control variables for the arrangement shown in Figure 1. box
You may annotate Figure 1 as part of your answer.
[2 marks]
1
2
0 1 . 2 The total mass m is made from a mass hanger and up to three slotted masses.
One 20 g, one 50 g and one 100 g slotted mass are provided.
The hanger has a mass of 100 g.
The hanger must not be removed from the string.
Which statement is correct?
Tick () one box.
[1 mark]
m has a maximum range of 170 g.
m has a maximum of 7 different values.
m values are evenly distributed across the range.
Question 1 continues on the next page
Turn over ►
for more: tyrionpapers.com
IB/M/Jun25/7408/3A
, 4
Do not write
outside the
box
The frequency f is calculated using the waveform displayed on the oscilloscope.
Figure 2 shows the waveforms displayed on the oscilloscope when m = 100 g and
when m = 200 g.
Figure 2
m = 100 g
m = 200 g
The y-voltage gain setting is 5 V div−1.
The time-base setting is 20 ms div−1.
for more: tyrionpapers.com
IB/M/Jun25/7408/3A
