AQA AS Level Physics – Combined
Questions with Verified Answers
Nucleon Number - correct answers-Also known as the mass number, total number of nucleons in the
nucleus
Isotope - correct answers-Atoms with the same number of protons but different numbers of neutrons
Strong Nuclear Force - correct answers-The force which holds the nucleus together
3fm - correct answers-The distance at which the maximum attractive value of the strong nuclear force
rapidly falls towards zero
Alpha Emission - correct answers-Emission due to very large atoms, such as uranium, as the nuclei are
too big for the strong nuclear force to hold them together
Beta Emission - correct answers-Emission due to neutron rich isotopes, so one neutron is changed into a
proton
Antimatter - correct answers-Has the same mass, with opposite charge and spins in the opposite
direction
Pair Production - correct answers-The process of one gamma ray photon producing a particle and
antiparticle pair
Annihilation - correct answers-The process in which a particle and anti-particle pair meet and 2 photons
are produced
Hadrons - correct answers-Particles that are affected by strong nuclear force, and contain quarks
Baryons - correct answers-Hadrons which contain 3 quarks, including protons and neutrons
Baryon Number - correct answers-Baryon = +1
Anti Baryon = -1
Mesons or Leptons = 0
Mesons - correct answers-Hadrons which contain an anti quark-quark pair, and contain electrons and
neutrinos
K-Mesons - correct answers-Heavier and more unstable mesons
Leptons - correct answers-Fundamental particles which only interact via weak interaction
Lepton Number - correct answers-There are 3 versions, electron, muon and tau - and for each they = +1
however they are all counted separately
Weak Interaction - correct answers-The force which can change the quark type
Where is strangeness conserved? - correct answers-Strong Interactions
, Gauge boson for strong interactions - correct answers-Gluon
Gauge boson for electromagnetic interactions - correct answers-Photon
Gauge boson for weak interactions - correct answers-W+, W- and Z0
The possible gauge boson for gravity - correct answers-Graviton
Feynman Diagram - correct answers-Diagram where gauge bosons are represented by wiggly lines, and
particles are represented by straight lines
The Photoelectric Effect - correct answers-When free electrons is a metal absorb enough energy to
break the bonds, and are then released
Particle nature of waves - correct answers-EM waves exist in discrete packets, so photons of light
transfer all the energy to that one electron rather than it being shared between many
Threshold Frequency - correct answers-The minimum frequency that light must have in order to cause
photoelectrons to be emitted by a given metal
Work Function Energy - correct answers-The minimum energy required to release an electron from a
material, measured in joules
Electronvolt - correct answers-The kinetic energy carried by an electron after it has been accelerated
through a potential difference of 1 volt
1 eV in Joules - correct answers-1.6x10(-19) Joules
Fluorescent Tubes - correct answers-1) Electrons in the mercury colide with free electrons
2) Excited electrons then return to ground state and emit photons
3) The coating then absorbs the photons, and photons are emitted in the form of visiblelight
Continuous Spectra - correct answers-A spectrum which contains all possible wavelengths
Wave nature of Electrons - correct answers-During electron diffraction, patterns are observed akin to
Young's slits
Current - correct answers-Rate of flow of charge
Potential Difference - correct answers-Energy per unit charge
Resistance - correct answers-A measure of how diffilcult it is to get a current to flow
1 Volt - correct answers-1 joule of energy moving across 1 coulomb of charge through the component
1 Coulomb - correct answers-The amount of charge that passes in 1 second when the current is 1
ampere
Ohmic Conductor - correct answers-A conductor where the current is directly proportional to the
potential difference - at constant temperature
Questions with Verified Answers
Nucleon Number - correct answers-Also known as the mass number, total number of nucleons in the
nucleus
Isotope - correct answers-Atoms with the same number of protons but different numbers of neutrons
Strong Nuclear Force - correct answers-The force which holds the nucleus together
3fm - correct answers-The distance at which the maximum attractive value of the strong nuclear force
rapidly falls towards zero
Alpha Emission - correct answers-Emission due to very large atoms, such as uranium, as the nuclei are
too big for the strong nuclear force to hold them together
Beta Emission - correct answers-Emission due to neutron rich isotopes, so one neutron is changed into a
proton
Antimatter - correct answers-Has the same mass, with opposite charge and spins in the opposite
direction
Pair Production - correct answers-The process of one gamma ray photon producing a particle and
antiparticle pair
Annihilation - correct answers-The process in which a particle and anti-particle pair meet and 2 photons
are produced
Hadrons - correct answers-Particles that are affected by strong nuclear force, and contain quarks
Baryons - correct answers-Hadrons which contain 3 quarks, including protons and neutrons
Baryon Number - correct answers-Baryon = +1
Anti Baryon = -1
Mesons or Leptons = 0
Mesons - correct answers-Hadrons which contain an anti quark-quark pair, and contain electrons and
neutrinos
K-Mesons - correct answers-Heavier and more unstable mesons
Leptons - correct answers-Fundamental particles which only interact via weak interaction
Lepton Number - correct answers-There are 3 versions, electron, muon and tau - and for each they = +1
however they are all counted separately
Weak Interaction - correct answers-The force which can change the quark type
Where is strangeness conserved? - correct answers-Strong Interactions
, Gauge boson for strong interactions - correct answers-Gluon
Gauge boson for electromagnetic interactions - correct answers-Photon
Gauge boson for weak interactions - correct answers-W+, W- and Z0
The possible gauge boson for gravity - correct answers-Graviton
Feynman Diagram - correct answers-Diagram where gauge bosons are represented by wiggly lines, and
particles are represented by straight lines
The Photoelectric Effect - correct answers-When free electrons is a metal absorb enough energy to
break the bonds, and are then released
Particle nature of waves - correct answers-EM waves exist in discrete packets, so photons of light
transfer all the energy to that one electron rather than it being shared between many
Threshold Frequency - correct answers-The minimum frequency that light must have in order to cause
photoelectrons to be emitted by a given metal
Work Function Energy - correct answers-The minimum energy required to release an electron from a
material, measured in joules
Electronvolt - correct answers-The kinetic energy carried by an electron after it has been accelerated
through a potential difference of 1 volt
1 eV in Joules - correct answers-1.6x10(-19) Joules
Fluorescent Tubes - correct answers-1) Electrons in the mercury colide with free electrons
2) Excited electrons then return to ground state and emit photons
3) The coating then absorbs the photons, and photons are emitted in the form of visiblelight
Continuous Spectra - correct answers-A spectrum which contains all possible wavelengths
Wave nature of Electrons - correct answers-During electron diffraction, patterns are observed akin to
Young's slits
Current - correct answers-Rate of flow of charge
Potential Difference - correct answers-Energy per unit charge
Resistance - correct answers-A measure of how diffilcult it is to get a current to flow
1 Volt - correct answers-1 joule of energy moving across 1 coulomb of charge through the component
1 Coulomb - correct answers-The amount of charge that passes in 1 second when the current is 1
ampere
Ohmic Conductor - correct answers-A conductor where the current is directly proportional to the
potential difference - at constant temperature
