AQA A LEVEL PHYSICS PAPER 1
COMPREHENSIVE TEST PAPER 2026
COMPLETE QUESTIONS AND ANSWERS
EXPERT VERIFIED GRADED A+
◉ Quark structure of neutron. Answer: udd
◉ Quark structure of meson. Answer: Quark and anti-quark.
◉ Quark structure of a baryon. Answer: 3 quarks or anti-quarks.
◉ Which quarks do pions consist of? Answer: u and d
◉ Which mesons contain strange quarks? Answer: Kaons
◉ Which interaction can change strangeness? Answer: Weak.
◉ By what amount can strangeness change during a weak
interaction? Answer: "+1 or -1"
,◉ Which interaction has gluons and pions as the exchange particle?
Answer: Strong nuclear.
◉ Which interaction has photons as the exchange particle? Answer:
Electromagnetic.
◉ Which interaction has W+, W- and Z0 exchange particles? Answer:
Weak.
◉ How is rest mass in MeV converted to J? Answer: x1.6x10-13
◉ Why do particles need large kinetic energies to produce
additional particles? Answer: The kinetic energy is coverted to rest
mass of the new particles.
◉ State the properties that have to be conserved in particle
interactions. Answer: Baryon number, charge, lepton number
(individually), strangeness (except in weak), energy.
◉ Which two leptons are produced during beta-minus decay?
Answer: Electron and electron anti-neutrino
◉ What is the lepton number of an electron, muon or tau? Answer:
"+1"
,◉ What is the lepton number of a positron? Answer: -1
◉ What is the lepton number of a baryon? Answer: 0
◉ What is the lepton number of a meson? Answer: 0
◉ What is the baryon number of a pion? Answer: 0
◉ What is the baryon number of a kaon? Answer: 0
◉ What is the baryon number of a meson? Answer: 0
◉ What is the baryon number of a proton? Answer: "+1"
◉ What is the baryon number of a neutron? Answer: "+1"
◉ What is the rest mass of an electron in MeV? Answer: 0.511MeV
◉ What is the rest mass of an electro nin kg? Answer: 9.11x10-31kg
◉ What is the MeV equivalent of 1u? Answer: 931.5MeV
, ◉ What is 1u equal to in kg? Answer: 1.66x10-27kg.
◉ Why do we turn the ratchet on a micrometer instead of the
thimble? Answer: Avoid distrorting/squashing/reducing the
diameter of the wire.
◉ A photon has a frequency equal to 2.69x1023Hz, what is the
energy in MeV? Answer: 1.1x103MeV
◉ Why are large international teams of scientists required for much
of the cutting-edge research projects? Answer: Research is
expensive, muti-disciplinary, lots of data needs to be processed.
◉ Define emf. Answer: The amount of energy is transferred from
chemical energy to electrical energy (for every coulomb of charge)
◉ Explain how length of wire affects current through wire. Answer:
Resistance increases, current decreases.
◉ What are the units for specific charge? Answer: C/kg
◉ What is the equation for specific charge? Answer: Charge/Mass
COMPREHENSIVE TEST PAPER 2026
COMPLETE QUESTIONS AND ANSWERS
EXPERT VERIFIED GRADED A+
◉ Quark structure of neutron. Answer: udd
◉ Quark structure of meson. Answer: Quark and anti-quark.
◉ Quark structure of a baryon. Answer: 3 quarks or anti-quarks.
◉ Which quarks do pions consist of? Answer: u and d
◉ Which mesons contain strange quarks? Answer: Kaons
◉ Which interaction can change strangeness? Answer: Weak.
◉ By what amount can strangeness change during a weak
interaction? Answer: "+1 or -1"
,◉ Which interaction has gluons and pions as the exchange particle?
Answer: Strong nuclear.
◉ Which interaction has photons as the exchange particle? Answer:
Electromagnetic.
◉ Which interaction has W+, W- and Z0 exchange particles? Answer:
Weak.
◉ How is rest mass in MeV converted to J? Answer: x1.6x10-13
◉ Why do particles need large kinetic energies to produce
additional particles? Answer: The kinetic energy is coverted to rest
mass of the new particles.
◉ State the properties that have to be conserved in particle
interactions. Answer: Baryon number, charge, lepton number
(individually), strangeness (except in weak), energy.
◉ Which two leptons are produced during beta-minus decay?
Answer: Electron and electron anti-neutrino
◉ What is the lepton number of an electron, muon or tau? Answer:
"+1"
,◉ What is the lepton number of a positron? Answer: -1
◉ What is the lepton number of a baryon? Answer: 0
◉ What is the lepton number of a meson? Answer: 0
◉ What is the baryon number of a pion? Answer: 0
◉ What is the baryon number of a kaon? Answer: 0
◉ What is the baryon number of a meson? Answer: 0
◉ What is the baryon number of a proton? Answer: "+1"
◉ What is the baryon number of a neutron? Answer: "+1"
◉ What is the rest mass of an electron in MeV? Answer: 0.511MeV
◉ What is the rest mass of an electro nin kg? Answer: 9.11x10-31kg
◉ What is the MeV equivalent of 1u? Answer: 931.5MeV
, ◉ What is 1u equal to in kg? Answer: 1.66x10-27kg.
◉ Why do we turn the ratchet on a micrometer instead of the
thimble? Answer: Avoid distrorting/squashing/reducing the
diameter of the wire.
◉ A photon has a frequency equal to 2.69x1023Hz, what is the
energy in MeV? Answer: 1.1x103MeV
◉ Why are large international teams of scientists required for much
of the cutting-edge research projects? Answer: Research is
expensive, muti-disciplinary, lots of data needs to be processed.
◉ Define emf. Answer: The amount of energy is transferred from
chemical energy to electrical energy (for every coulomb of charge)
◉ Explain how length of wire affects current through wire. Answer:
Resistance increases, current decreases.
◉ What are the units for specific charge? Answer: C/kg
◉ What is the equation for specific charge? Answer: Charge/Mass
