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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]$9.73
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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
• 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.
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
write
outside the
outside the
Section B box
box
Answer all questions in this section.
0 1 In Figure 1, a beam of electrons travels through the aperture in the anode and hits
the screen.
Figure 1
0 1 . 1 Explain how the electrons that form the beam are emitted.
[1 mark]
0 1 . 2 Show that the maximum speed of the electrons in the beam is about 1.3 × 107 m s−1.
[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
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