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A-level
PHYSICS
Paper 2
Friday 9 June 2023 Morning Time allowed: 2 hours
Materials For Examiner’s Use
For this paper you must have:
• a pencil and a ruler Question Mark
• 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
outside the box around each page or on blank pages. 8–32
• 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 85.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
*JUN237408201*
IB/M/Jun23/E7 7408/2
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1 . 1 State what is meant by the internal energy of an ideal gas.
[1 mark]
Figure 1 shows a single gas particle P of an ideal gas inside a hollow cube.
Figure 1
The cube has side length l and volume V.
P has mass m and is travelling at a velocity c perpendicular to side W.
0 1 . 2 Explain why P has a change in momentum of −2mc during one collision with W.
[1 mark]
*02*
IB/M/Jun23/7408/2
, 3
Do not write
outside the
0 1 . 3 P collides repeatedly with W. box
c
Show that the frequency f of collisions is .
2l
[1 mark]
0 1 . 4 Deduce an expression, in terms of m, c and V, for the contribution of P to the
pressure exerted on W.
Refer to appropriate Newton’s laws of motion.
[2 marks]
5
Turn over for the next question
Turn over ►
*03*
IB/M/Jun23/7408/2
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