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2023 AQA AS PHYSICS 7407/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]
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2023 AQA AS PHYSICS 7407/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]
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2023 AQA AS PHYSICS 7407/1 Paper 1 Question Paper & Mark scheme (Merged) June
2023 [VERIFIED]
AS
PHYSICS
Paper 1
Wednesday 17 May 2023 Morning Time allowed: 1 hour 30 minutes
Materials
For Examiner’s Use
For this paper you must have:
• a pencil and a ruler Question Mark
• a scientific calculator
• a Data and Formulae Booklet 1
• a protractor. 2
3
Instructions 4
• Use black ink or black ball-point pen.
5
• Fill in the boxes at the top of this page.
• Answer all questions. 6
• You must answer the questions in the spaces provided. Do not TOTAL
write outside the box around each page or on blank pages.
• 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).
• 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 70.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
*JUN237407101*
IB/M/Jun23/E7 7407/1
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
−
A strong interaction between a negative kaon (K ) and a proton (p)
produces −0
The interaction is:
− − 0
K +p→Ω +K +Y
Table 1 contains information on the particles in this interaction.
Table 1
− − 0
K p Ω K Y
Rest energy / MeV 493.8 938.3 1672 497.8 493.8
Baryon number +1 +1 0
Charge −1e +1e −1e 0
Strangeness −1 0 −3 +1
0 1 .
1 Complete Table 1.
[2 marks]
−
0 1 2 Calculate, in J, the rest energy of the Ω .
[2 marks]
rest energy = J
*02*
IB/M/Jun23/7407/1
, 3
Do not write
outside the
0 1 . 3 Suggest how energy is conserved in this interaction. box
Refer to the rest energies of the particles in Table 1.
[2 marks]
−
The quark structure of the Ω particle is sss.
−
The Ω is unstable. It decays into a proton through a series of decays:
− 0 −
Ω →Ξ +π
followed by
0 0 0
Ξ →Λ +π
followed by
0 −
Λ →p+π
0 0
The Ξ and Λ are both hadrons.
. 0
01 4 Deduce the quark structure of the Λ particle.
[4 marks]
0
quark structure of Λ =
Question 1 continues on the next page
Turn over ►
*03*
IB/M/Jun23/7407/1
, 4
Do not write
0 − outside the
The products of the decay series include π and π particles. These particles box
are unstable and decay.
. 0
0 1 5The π decays into gamma photons. Each gamma photon has a wavelength of
−14
1.25 × 10 m.
Calculate the energy of one of these photons.
[2 marks]
energy of photon = J
. −
0 1 6The negative pion π decays.
Which row shows the particles that could be created in this decay?
✓
Tick ( ) one box.
[1 mark]
−
μ +νμ
−
e + ve
−
e + νe
13
− + −
e +e +e
*04*
IB/M/Jun23/7407/1
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