AQA
A-LEVEL
PHYSICS 7408/ z
2
Paper 2z
Question Paper + Mark scheme [MERGED]
z z z z z
, Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatu re
I declare this is my own work.
A-level
PHYSICS
Paper 2 z
Time allowed: 2 hours
z z z
Materials For Examiner’s Use
For this paper you must have:
z z z z z
• a pencil and a ruler
z z z z
Question Mark
• a scientific calculator
z z 1
• a Data and Formulae Booklet
z z z z
2
• a protractor.
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3
Instructions 4
• Use black ink or black ball-point pen.
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5
• Fill in the boxes at the top of this page.
z z z z z z z z z
• Answer all questions. z z
6
• You must answer the questions in the spaces provided. Do not write ou
z z z z z z z z z z z z 7–31
tside the box around each page or on blank pages.
z z z z z z z z z
TOTAL
• If you need extra space for your answer(s), use the lined pages at the end of thi
z z z z z z z z z z z z z z z z
s book. Write the question number against your answer(s).
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• Do all rough work in this book. Cross through any work you do not want to
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be marked. z
• Show all your working. z z z
Information
• The marks for questions are shown in brackets.
z z z z z z z
• The maximum mark for this paper is 85.
z z z z z z z
• You are expected to use a scientific calculator where appropriate.
z z z z z z z z z
• A Data and Formulae Booklet is provided as a loose insert.
z z z z z z z z z z
IB/M/Jun22/E13 7408/2
, 2
Do
Doznot
notzwrite
write
outsidezthe
z outside th
Section A z ezbox
box
Answer all questions in this section.
z z z z z
0 1 Figure 1 shows an electric steam iron.
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Figure 1 z
Water from a reservoir drips onto an electrically-
z z z z z z z
heated metal plate. The water boils and steam escapes through holes in the metal plate.
z z z z z z z z z z z z z z
The electrical power of the heater inside the iron is 2.1 kW.
z z z z z z z z z z z
Assume that all the energy from the heater is transferred to the metal plate.
z z z z z z z z z z z z z
0 1
. 1
z The metal plate has a mass of 1.2 kg and is initially at a temperature of 20 °C. The he
z z z z z z z z z z z z z z z z z z z
ater is switched on. After a time t the metal plate reaches its working temperature of
z z z z z z z z z z z z z z z
125 °C.
z z
Calculate t. z
specific heat capacity of the metal = 450 J kg−1 K−1
z z z z z z z z z z
[2 marks]
z
t=
z z z s
IB/M/Jun22/7408/2
, 3
Doznotzwritez
outsidezthez b
0 1 . 2
z The metal plate is maintained at its working temperature. Water
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ox
at 20 °C drips continuously onto the metal plate.
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Steam at 100 °C emerges continuously from the iron.
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The maker claims that the iron can generate steam at a rate of 60 g min−1. Determine w
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hether this claim is true.
z z z z
specific latent heat of vaporisation of water = 2.3 106 J kg−1
z z z z z z z z z z z z
specific heat capacity of water = 4200 J kg−1 K−1
z z z z z z z z z
[3 marks]
z
5
Turn over ►
z z
IB/M/Jun22/7408/2
A-LEVEL
PHYSICS 7408/ z
2
Paper 2z
Question Paper + Mark scheme [MERGED]
z z z z z
, Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatu re
I declare this is my own work.
A-level
PHYSICS
Paper 2 z
Time allowed: 2 hours
z z z
Materials For Examiner’s Use
For this paper you must have:
z z z z z
• a pencil and a ruler
z z z z
Question Mark
• a scientific calculator
z z 1
• a Data and Formulae Booklet
z z z z
2
• a protractor.
z
3
Instructions 4
• Use black ink or black ball-point pen.
z z z z z z
5
• Fill in the boxes at the top of this page.
z z z z z z z z z
• Answer all questions. z z
6
• You must answer the questions in the spaces provided. Do not write ou
z z z z z z z z z z z z 7–31
tside the box around each page or on blank pages.
z z z z z z z z z
TOTAL
• If you need extra space for your answer(s), use the lined pages at the end of thi
z z z z z z z z z z z z z z z z
s book. Write the question number against your answer(s).
z z z z z z z z
• Do all rough work in this book. Cross through any work you do not want to
z z z z z z z z z z z z z z z z
be marked. z
• Show all your working. z z z
Information
• The marks for questions are shown in brackets.
z z z z z z z
• The maximum mark for this paper is 85.
z z z z z z z
• You are expected to use a scientific calculator where appropriate.
z z z z z z z z z
• A Data and Formulae Booklet is provided as a loose insert.
z z z z z z z z z z
IB/M/Jun22/E13 7408/2
, 2
Do
Doznot
notzwrite
write
outsidezthe
z outside th
Section A z ezbox
box
Answer all questions in this section.
z z z z z
0 1 Figure 1 shows an electric steam iron.
z z z z z z
Figure 1 z
Water from a reservoir drips onto an electrically-
z z z z z z z
heated metal plate. The water boils and steam escapes through holes in the metal plate.
z z z z z z z z z z z z z z
The electrical power of the heater inside the iron is 2.1 kW.
z z z z z z z z z z z
Assume that all the energy from the heater is transferred to the metal plate.
z z z z z z z z z z z z z
0 1
. 1
z The metal plate has a mass of 1.2 kg and is initially at a temperature of 20 °C. The he
z z z z z z z z z z z z z z z z z z z
ater is switched on. After a time t the metal plate reaches its working temperature of
z z z z z z z z z z z z z z z
125 °C.
z z
Calculate t. z
specific heat capacity of the metal = 450 J kg−1 K−1
z z z z z z z z z z
[2 marks]
z
t=
z z z s
IB/M/Jun22/7408/2
, 3
Doznotzwritez
outsidezthez b
0 1 . 2
z The metal plate is maintained at its working temperature. Water
z z z z z z z z z z
ox
at 20 °C drips continuously onto the metal plate.
z z z z z z z z
Steam at 100 °C emerges continuously from the iron.
z z z z z z z z
The maker claims that the iron can generate steam at a rate of 60 g min−1. Determine w
z z z z z z z z z z z z z z z z z
hether this claim is true.
z z z z
specific latent heat of vaporisation of water = 2.3 106 J kg−1
z z z z z z z z z z z z
specific heat capacity of water = 4200 J kg−1 K−1
z z z z z z z z z
[3 marks]
z
5
Turn over ►
z z
IB/M/Jun22/7408/2
