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
Wednesday 20 May 2026 Afternoon Time allowed: 2 hours
Materials For Examiner’s Use
For this paper you must have:
Question Mark
• a pencil and a ruler
• a scientific calculator 1
• a Data and Formulae Booklet 2
• a protractor.
3
Instructions 4
• Use black ink or black ball-point pen. 5
• Fill in the boxes at the top of this page.
6
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write 7–31
outside the box around each page or on blank pages. TOTAL
• 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.
*jun267408101*
7408/1
for more:
IB/M/Jun26/G4007/V9
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1 . 1 ( )
Describe the simple model of the nitrogen-17 17
7 N atom.
[2 marks]
A nitrogen-17 nucleus is unstable and decays in two steps:
step 1
The nitrogen-17 nucleus decays to form an oxygen-17 17 ( )
8 O nucleus in an
excited state.
step 2
The excited oxygen-17 nucleus becomes a stable isotope by emitting a neutron.
0 1 . 2 State the fundamental force involved in step 1.
Go on to explain your answer.
[2 marks]
*02* for more:
IB/M/Jun26/7408/1
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
PHYSICS
Paper 1
Wednesday 20 May 2026 Afternoon Time allowed: 2 hours
Materials For Examiner’s Use
For this paper you must have:
Question Mark
• a pencil and a ruler
• a scientific calculator 1
• a Data and Formulae Booklet 2
• a protractor.
3
Instructions 4
• Use black ink or black ball-point pen. 5
• Fill in the boxes at the top of this page.
6
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write 7–31
outside the box around each page or on blank pages. TOTAL
• 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.
*jun267408101*
7408/1
for more:
IB/M/Jun26/G4007/V9
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1 . 1 ( )
Describe the simple model of the nitrogen-17 17
7 N atom.
[2 marks]
A nitrogen-17 nucleus is unstable and decays in two steps:
step 1
The nitrogen-17 nucleus decays to form an oxygen-17 17 ( )
8 O nucleus in an
excited state.
step 2
The excited oxygen-17 nucleus becomes a stable isotope by emitting a neutron.
0 1 . 2 State the fundamental force involved in step 1.
Go on to explain your answer.
[2 marks]
*02* for more:
IB/M/Jun26/7408/1
