Exam (elaborations)
AQA A-level PHYSICS Paper 1 MAY 2023 Wednesday 24 May 2023
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AQA A-level PHYSICS Paper 1 MAY 2023 Wednesday 24 May 2023
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7408/1AQA
A-level
PHYSICS
Paper 1
MAY 2023
Wednesday 24 May 2023
, Section A box
Answer all questions in this
section.
The0neutral
1 lambda particle Λ0 is a baryon with a strangeness of −1
One possible decay for a Λ0 is
0 0 + n
0 1 .1 Deduce the quark structure of
aΛ.0
[1 mark]
0 1 .2 State and explain which interaction is involved in this decay.
[2 marks]
0 1 .3 An antiparticle of the neutral lambda particle decays into a neutral pion and particle
X.
Identify X.
[1 mark]
,0 1 .4 The rest energy of a Λ0 is equal to the energy of a photon with a box
frequency of 2.69 × 1023 Hz.
Determine, in MeV, the rest energy of a Λ0.
[1
mark]
rest energy MeV
=
0 1 .5 The discovery of particles such as the Λ0 is made by large
international research teams.
Suggest one reason for this.
[1 mark]
6
Turn over for the next question
, Turn over ►
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