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2023 AQA A-level PHYSICS 7408/3BD Paper 3 Section B Turning points in physics Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]£7.16
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2023 AQA A-level PHYSICS 7408/3BD Paper 3 Section B Turning points in physics Question
Paper & Mark scheme (Merged) June 2023 [VERIFIED]
A-level
PHYSICS
Paper 3
Section B Turning points in physics
Thursday 15 June 2023 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 50 minutes on this section.
• a Data and Formulae Booklet
• a protractor.
For Examiner’s Use
Instructions
Question Mark
• Use black ink or black ball-point pen.
• Fill in the boxes at the top of this page. 1
• Answer all questions. 2
• You must answer the questions in the spaces provided. Do not 3
write outside the box around each page or on blank pages.
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.
*JUN2374083BD01*
IB/M/Jun23/E8 7408/3BD
, 2
Do not
Do not
write outside
Section B the box
Answer all questions in this section.
0 1In Figure 1, a beam of electrons travels through the aperture in the anode and hits the
screen.
Figure 1
0 1 . 1Explain how the electrons that form the beam are emitted.
[1 mark]
7 −1
0 1 . 2Show that the maximum speed of the electrons in the beam is about 1.3 × 10 m s .
[1 mark]
*02*
IB/M/Jun23/7408/3BD
, 3
Do not write
outside the
0 1 . 3 A student suggests that the apparatus can be used to demonstrate the wave box
properties of electrons in the beam, provided that the aperture in the anode has
a suitable diameter.
Discuss whether the student is correct.
Support your answer with a calculation.
[3 marks]
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun23/7408/3BD
, 4
Do not write
outside the
0 1 . 4 In 1897, J J Thomson determined a value for the specific charge of an unknown box
particle.
The unknown particle is now known to be the electron.
Describe one method to determine the specific charge of the electron.
Your answer should include:
• a description of the apparatus used and the measurements made
• a description of how the specific charge can be determined
using these measurements
• an explanation of the conclusion made by Thomson from the value that he
determined.
[6 marks]
*04*
IB/M/Jun23/7408/3BD
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