11 markeasy
What is a particle that is not made of any smaller particles?
Choose your answer
elementary particle
minimum particle
original particle
atomic particle
Physics — A-Level
Fundamental Particles — Multiple-Choice Questions (Cambridge International A-Level Physics): Exam Questions
Exam code:970222 questions · 22 marks · ≈ 22 min
21 markeasy
Light is made up of which type of elementary particle?
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quarks
leptons
photons
bosons
31 markeasy
What type of elementary particles are electrons ?
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quarks
leptons
photons
bosons
41 markeasy
What elementary particles are the building blocks for protons and neutrons ?
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quarks
leptons
photons
bosons
51 markeasy
How many quarks make up a proton ?
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0
1
2
3
61 markeasy
Which particle is made up of two 'down' quarks and one 'up' quark?
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atom
electron
neutron
proton
71 markeasy
How many types of quark are there ?
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2
4
6
8
81 markeasy
Which elementary particle is a lepton ?
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neutron
electron
quark
proton
91 markeasy
What are the fundamental particles of an atom ?
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quarks, gluons and electrons
protons, neutrons and electrons
quarks, photons and electrons
quarks, gluons and neutrino
101 markeasy
What are mesons ?
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a type of composite particle produced by high energy
a type of gluon
an antimatter version of the electron
a type of neutrino
111 markmedium
Which of the following sentences about antimatter is incorrect?
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antimatter is normal matter with an opposite charge
antimatter is only produced in particle accelerators
antimatter destroys matter
equal amounts of antimatter and matter were created during the Big Bang
121 markmedium
Fundamental or elementary particles are particles that aren't made up of smaller particles.
What is the most common type of fundamental particle in the universe ?
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atom
meson
neutrino
quark
131 markmedium
In a nucleus of Tritium, , how many ‘down’ quarks are there?
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5
4
3
2
141 markmedium
Which row in the table gives the correct quark combination for the particle?
| Particle | Category | Quark combination | |
|---|---|---|---|
| A | neutron | baryon | |
| B | neutron | meson | |
| C | proton | baryon | |
| D | positive pion | meson |
Choose your answer
151 markmedium
What are the numbers of hadrons, baryons and mesons in an atom of ?
| Hadrons | Baryons | Mesons | |
|---|---|---|---|
| A | 7 | 3 | 3 |
| B | 7 | 4 | 4 |
| C | 7 | 7 | 0 |
| D | 10 | 7 | 0 |
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161 markhard
Quarks are thought to make up protons and neutrons.
The 'up' quark has a charge of ; a 'down' quark has a charge of , where e is the elementary charge (+ 1.6 × 10–19 C)
How many up quarks and down quarks must a proton contain ?
| Up quarks | Down quarks | |
|---|---|---|
| A | 0 | 3 |
| B | 2 | 1 |
| C | 1 | 2 |
| D | 1 | 1 |
Choose your answer
171 markhard
A CERN detector shows a signal only in the hadronic calorimeter. No signal is observed in the tracker, electromagnetic calorimeter or muon chambers.
Which particle must be responsible for this signal?
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pion
neutrino
photon
neutron
181 markhard
Some particles are made up of a combination of three quarks.
Which particle would not give a particle a charge of either +1.6 × 10−19 C or zero?
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up, up, up
up, up, down
up, strange, strange
up, down, down
191 markhard
The composition of four different hadrons are shown in the diagram below. One of the hadrons is a Σ + particle. It has a charge of +e, where is *e *is the elementary charge.
Which hadron could be the Σ + particle ?
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201 markhard
When high-speed hadrons collide in particle accelerators, a positive pion (π+) is an unstable particle produced. The π+ particle has a charge of +e.
What is the quark combination of the π+ particle?
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211 markhard
A graph of nucleon number A against proton number Z is shown in the diagram below.
The graph shows a cross that represents a nucleus P.
Nucleus P decays by emitting an α-particle to form a nucleus Q.
Nucleus Q then decays by emitting a β– particle to form a nucleus R.
The quark composition of one nucleon in Q is changed during the emission of the β– particle.
What is the corresponding change in quark composition from nucleus Q to nucleus R ?
Choose your answer
no change
u-quark to d-quark
d-quark to u-quark
d-quark to s-quark
221 markhard
The equation for β– decay is
Using your knowledge of antiparticles and the weak interaction, what is the equation for β+ decay?
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