Exam (elaborations)
AQA A Level Physics May-June 2024 Question Paper 2 (7408-2)
AQA A Level Physics May-June 2024 Question Paper 2 (7408-2)
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Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
PHYSICS
Paper 2
Thursday 6 June 2024 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.
*JUN247408201*
IB/M/Jun24/E11 7408/2
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1
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A room contains dry air at a temperature of 20.0 °C and a pressure of 105 kPa.
0 1 . 1 Show that the amount of air in each cubic metre is about 40 mol.
[1 mark]
0 1 . 2 The density of the dry air is 1.25 kg m−3.
Calculate crms for the air molecules.
Give your answer to an appropriate number of significant figures.
[3 marks]
crms = m s−1
0 1 . 3 Calculate, in K, the change of temperature that will double crms for the air molecules.
[2 marks]
change of temperature = K
*02*
IB/M/Jun24/7408/2
, 3
Do not write
outside the
0 1 . 4 A room contains moist air at a temperature of 20 °C. box
A dehumidifier cools and then condenses water vapour from the moist air.
The final temperature of the liquid water that collects in the dehumidifier is 10 °C.
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Drier air leaves the dehumidifier at a temperature of 20 °C.
Table 1 compares the air flowing into and out from the dehumidifier.
Table 1
mass of water
mass of air
moist air flowing in 0.0057
drier air flowing out 0.0037
In one hour, a volume of 960 m3 of air flows through the dehumidifier.
Assume that the density of the air remains constant at 1.25 kg m−3.
Determine how much heat energy is removed in one hour from the water vapour by
the dehumidifier.
specific heat capacity of water vapour = 1860 J kg−1 K−1
specific latent heat of vaporisation of water = 2.3 × 106 J kg−1
[3 marks]
heat energy removed = J 9
Turn over ►
*03*
IB/M/Jun24/7408/2
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