WorksheetsAQA A-level Physics - Particles and interactions
Total questions: 20
Worksheet time: 5hrs 0mins
Which row identifies the exchange particle Q and the quark structure of particle R?
Q: W- and R: uuu
Q: W+ and R: dud
Q: W+ and R: uuu
Q: W- and R: dud
The decay of a neutral kaon K0 is given by the equation:
K0 → X + Y + v̅e
What are X and Y?
e+ and e–
μ+ and e–
π+ and e–
π– and e+
Which diagram represents the process of beta-plus decay?
A
B
C
D
Which of the following is not true?
Each meson consists of a single quark and a single anti-quark
Each baryon consists of three quarks
The magnitude of the charge on every quark is 1/3
A particle consisting of a single quark has not been observed
Which of the following is not made of quarks?
kaon
muon
neutron
pion
What is the quark structure for an anti-proton?
Which equation shows the process of annihilation?
π− + π → γ
β− + p → γ
γ + γ → β+ + β−
Electron capture can be represented by the following equation.
p + e– → X + Y
Which two particles represent X and Y?
p and K–
e– and e+
n and Ve
n and π0
What of the following is a hadron of zero charge?
neutrino
photon
proton
neutron
Which statement concerning the forces between particles is incorrect?
Leptons experience the weak interaction.
Leptons experience the strong interaction.
Hadrons experience the weak interaction.
Hadrons experience the strong interaction.
Which particle is correctly described?
neutron: baryon, ūd
neutron: meson, udd
proton: baryon, uud
positive pion: meson, ūd
Which of the following statements about muons is incorrect?
A muon is a lepton.
A muon has a greater mass than an electron.
A muon is made up of a quark and an anti-quark
A muon decays via the weak interaction
Which answer shows the correct interactions experienced by a hadron or a lepton?
Hadron: Strong = Yes. Weak = Yes
Lepton: Strong = Yes. Weak = Yes
Hadron: Strong = Yes. Weak = No
Lepton: Strong = Yes. Weak = No
Which answer does not give the correct force and exchange-particle combination?
gravitational attraction: W boson
electrostatic repulsion of electrons: virtual photon
strong interaction: pion
β− decay: W boson
What interactions are involved in the production of a strange particle and its decay into non-strange particles?
Production = Strong, Decay = Weak
Production = Strong, Decay = Strong
Production = Weak, Decay = Strong
Production = Weak, Decay = Weak
Which is a property of particle Y?
It has a lepton number of +1
It is an antiparticle
It is negatively charged
It experiences the strong interaction
The ∑0 baryon, composed of the quark combination uds, is produced through the strong interaction between a π+ meson and a neutron.
π+ + n → ∑0 + X
What is the quark composition of X?
u s̅
u d
u d̅
u d s̅
Over what range is the strong nuclear force attractive?
greater than 3 fm
0.3 fm to 0.5 fm
0.5 fm to 3 fm
less than 0.5 fm
Which particle is responsible for carrying away the missing energy and momentum in a nuclear decay process?
muon
neutrino
pion
W boson
In an annihilation event, a particle and its anti-particle annihilate each other and produce two..?
electrons
muons
leptons
photons
