AQA_2024: A-level Physics - Paper 3
Section B Turning Points in Physics.
(Merged Question Paper and Marking Scheme)
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatu re
I declare this is my own work.
A-level
PHYSICS
Paper 3
Section B Turning points in physics
Monday 17 June 2024 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
a Data and Formulae Booklet
50 minutes on this section.
a protractor.
For Examiner’s Use
Instructions Question Mark
Use black ink or black ball-point pen.
1
Fill in the boxes at the top of this page.
Answer all questions. 2
You must answer the questions in the spaces provided. Do not write 3
outside the box around each page or on blank pages. IB/M/Jun24/E9
4
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). TOTAL
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 35.
You are expected to use a scientific calculator where appropriate.
A Data and Formulae Booklet is provided as a loose insert.
,Key areas:
1. Key Historical Experiments:
o The Photoelectric Effect: Understand Einstein's explanation,
how light can eject electrons from a metal surface, and the
concept of quantized energy levels.
o Millikan’s Oil Drop Experiment: Study the determination of the
electron charge and its significance.
o Rutherford's Scattering Experiment: Focus on how this
experiment led to the discovery of the atomic nucleus and the
development of the Bohr model.
2. Key Concepts and Principles:
o Quantum Mechanics: Review wave-particle duality, uncertainty
principle, and the Schrödinger equation, emphasizing their
application to atomic structure and energy quantization.
o Electromagnetic Spectrum: Focus on the properties and uses of
different types of electromagnetic waves, including their
interaction with matter.
3. The Development of the Atomic Model:
o Explore the evolution from the plum pudding model to the Bohr
model and the quantum mechanical model, highlighting the key
discoveries that led to these advancements.
4. Modern Physics Theories:
o Relativity: Understand both special and general relativity,
particularly time dilation, length contraction, and the curvature of
spacetime.
o Particle Physics: Revise the Standard Model, types of
fundamental particles (quarks, leptons, bosons), and the
significance of particle accelerators.
5. Practical Applications:
o Lasers: Understand the principles behind the operation of lasers,
including stimulated emission and population inversion.
o Semiconductors and Transistors: Study the role of
semiconductors in modern electronics, with an emphasis on their
properties and use in diodes and transistors.
7408/3BD
, 2
Do not
Do not write
write
outside the
outside the
Section B box
box
Answer all questions in this section.
0 1 . 1 Figure 1 shows apparatus used in an experiment to measure the specific charge of
the electron.
Figure 1
Electrons are accelerated by the potential difference VA.
The electrons then enter the region between two parallel metal plates, shown shaded
in Figure 1. The parallel metal plates are separated by a distance d with a potential
difference VP across them. In the same region there is a uniform magnetic field of flux
density B into the plane of the diagram.
Explain why the electron beam is undeflected in the shaded region shown in Figure 1.
[2 marks]
IB/M/Jun24/7408/3BD
, 3
Do not write
outside the
0 1 . 2 Determine, using the following data, a value for the specific charge of the electron. box
B = 1.59 mT
VP = 1.51 kV
d = 5.0 cm
VA = 1.00 kV
[4 marks]
specific charge = C kg−1 6
Turn over for the next question
Turn over ►
IB/M/Jun24/7408/3BD
Section B Turning Points in Physics.
(Merged Question Paper and Marking Scheme)
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatu re
I declare this is my own work.
A-level
PHYSICS
Paper 3
Section B Turning points in physics
Monday 17 June 2024 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
a Data and Formulae Booklet
50 minutes on this section.
a protractor.
For Examiner’s Use
Instructions Question Mark
Use black ink or black ball-point pen.
1
Fill in the boxes at the top of this page.
Answer all questions. 2
You must answer the questions in the spaces provided. Do not write 3
outside the box around each page or on blank pages. IB/M/Jun24/E9
4
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). TOTAL
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 35.
You are expected to use a scientific calculator where appropriate.
A Data and Formulae Booklet is provided as a loose insert.
,Key areas:
1. Key Historical Experiments:
o The Photoelectric Effect: Understand Einstein's explanation,
how light can eject electrons from a metal surface, and the
concept of quantized energy levels.
o Millikan’s Oil Drop Experiment: Study the determination of the
electron charge and its significance.
o Rutherford's Scattering Experiment: Focus on how this
experiment led to the discovery of the atomic nucleus and the
development of the Bohr model.
2. Key Concepts and Principles:
o Quantum Mechanics: Review wave-particle duality, uncertainty
principle, and the Schrödinger equation, emphasizing their
application to atomic structure and energy quantization.
o Electromagnetic Spectrum: Focus on the properties and uses of
different types of electromagnetic waves, including their
interaction with matter.
3. The Development of the Atomic Model:
o Explore the evolution from the plum pudding model to the Bohr
model and the quantum mechanical model, highlighting the key
discoveries that led to these advancements.
4. Modern Physics Theories:
o Relativity: Understand both special and general relativity,
particularly time dilation, length contraction, and the curvature of
spacetime.
o Particle Physics: Revise the Standard Model, types of
fundamental particles (quarks, leptons, bosons), and the
significance of particle accelerators.
5. Practical Applications:
o Lasers: Understand the principles behind the operation of lasers,
including stimulated emission and population inversion.
o Semiconductors and Transistors: Study the role of
semiconductors in modern electronics, with an emphasis on their
properties and use in diodes and transistors.
7408/3BD
, 2
Do not
Do not write
write
outside the
outside the
Section B box
box
Answer all questions in this section.
0 1 . 1 Figure 1 shows apparatus used in an experiment to measure the specific charge of
the electron.
Figure 1
Electrons are accelerated by the potential difference VA.
The electrons then enter the region between two parallel metal plates, shown shaded
in Figure 1. The parallel metal plates are separated by a distance d with a potential
difference VP across them. In the same region there is a uniform magnetic field of flux
density B into the plane of the diagram.
Explain why the electron beam is undeflected in the shaded region shown in Figure 1.
[2 marks]
IB/M/Jun24/7408/3BD
, 3
Do not write
outside the
0 1 . 2 Determine, using the following data, a value for the specific charge of the electron. box
B = 1.59 mT
VP = 1.51 kV
d = 5.0 cm
VA = 1.00 kV
[4 marks]
specific charge = C kg−1 6
Turn over for the next question
Turn over ►
IB/M/Jun24/7408/3BD
