PHYSICS A LEVEL AQA (LATEST 2025/2026) STUDY GUIDE WITH COMPLETE SOLUTIONS
Acceleration - (answer)change in V per unit t
Acceleration of free fall - (answer)Acceleration of an object only acted on by force of gravity
Accurate - (answer)Measurement obtained using calibrated instruments correctly
Accuracy - (answer)How close to the true value
Alpha radiation - (answer)Particle consisting of 2 P's and 2 N's
Amplitude - (answer)Max displacement of oscillating particle from equilibrium position
Annihilation - (answer)Particle and antiparticle meet, destroy eachother and emit radiation
Antibaryon - (answer)Hadron w/ 3 quarks
Antimatter - (answer)Antiparticles with same quantum values but opposite charge to corresponding
particles
Antinode - (answer)Fixed point on stationary wave where amplitude is maximum
Atomic number Z - (answer)Number of P's in atom nucleus
Baryon - (answer)Hadron w/ 3 quarks
Base units - (answer)Units that define the SI system:
Kg
,PHYSICS A LEVEL AQA (LATEST 2025/2026) STUDY GUIDE WITH COMPLETE SOLUTIONS
Amp
S
M
Beta radiation - (answer)when B- or B+ particles are emitted following decay of a neutron-rich or
proton-rich nucleus
Braking distance - (answer)Distance travelled by vehicle in time taken to stop
Breaking stress/Ultimate tensile stress - (answer)Tensile stress needed to break a solid material
Brittle - (answer)Snaps without bending or stretching when subject to stress
Centre of mass - (answer)Point through which a single force on the body has no turning affect
Charge carriers - (answer)Charged particles that move through substance when PD applied across it
Kirchoff's 1st Law - (answer)Current passing through 2 or more components in series is the same
through each component
At a junction the total current in = total current out
Kirchoff's 2 Law - (answer)2 or more components in series - total PD across all the components is = to
sum of the PD's across each component
Sum of emf's around complete loop = sum of PD's around the loop
Coherent - (answer)Constant phase difference and same frequency
,PHYSICS A LEVEL AQA (LATEST 2025/2026) STUDY GUIDE WITH COMPLETE SOLUTIONS
Conservation rules - (answer)Rule that:
Baryon no
Lepton no
Charge
Energy
Momentum
always conserved in interactions
When is strangeness conserved? - (answer)Strong interactions
How are strange particles created? - (answer)Strong interactions
How to strange particles decay? - (answer)Weak interactions
Couple - (answer)Pair of equal and opposite forces acting upon the same body but not along the same
line
Critical angle - (answer)The angle of incidence of a light ray must exceed this angle for total internal
reflection to occur
Critical temperature - (answer)Temperature at or below which a superconducting material has zero
resistivity
Cycle - (answer)Interval for an oscillating particle from a certain displacement and velocity to the next
time the particle has identical displacement and velocity
de Broglie hypothesis - (answer)Matter particles have a wave-like nature
, PHYSICS A LEVEL AQA (LATEST 2025/2026) STUDY GUIDE WITH COMPLETE SOLUTIONS
de Broglie wavelength - (answer)Wavelength of a matter particle
deexcitation - (answer)process by which atom loses energy by photon emission as electron moves to
lower energy level - inner shell
denisty - (answer)mass per unit volume for substance
diffraction - (answer)spreading out of waves that pass through gap or near edge
diffraction grating - (answer)plate with close parallel slits on it
dispersion - (answer)splitting of beam of white light into colours by prism
displacement - (answer)distance in a given direction from equilibrium position
drag force - (answer)force of fluid resistance on an object moving through fluid
ductile - (answer)stretches easily without breaking
efficiency - (answer)ratio of useful energy transferred to energy supplied to it
output power/input power
elastic limit - (answer)point beyond which wire is permanently stretched
elasticity - (answer)property of solid that allows it to regain shape after being deformed
Acceleration - (answer)change in V per unit t
Acceleration of free fall - (answer)Acceleration of an object only acted on by force of gravity
Accurate - (answer)Measurement obtained using calibrated instruments correctly
Accuracy - (answer)How close to the true value
Alpha radiation - (answer)Particle consisting of 2 P's and 2 N's
Amplitude - (answer)Max displacement of oscillating particle from equilibrium position
Annihilation - (answer)Particle and antiparticle meet, destroy eachother and emit radiation
Antibaryon - (answer)Hadron w/ 3 quarks
Antimatter - (answer)Antiparticles with same quantum values but opposite charge to corresponding
particles
Antinode - (answer)Fixed point on stationary wave where amplitude is maximum
Atomic number Z - (answer)Number of P's in atom nucleus
Baryon - (answer)Hadron w/ 3 quarks
Base units - (answer)Units that define the SI system:
Kg
,PHYSICS A LEVEL AQA (LATEST 2025/2026) STUDY GUIDE WITH COMPLETE SOLUTIONS
Amp
S
M
Beta radiation - (answer)when B- or B+ particles are emitted following decay of a neutron-rich or
proton-rich nucleus
Braking distance - (answer)Distance travelled by vehicle in time taken to stop
Breaking stress/Ultimate tensile stress - (answer)Tensile stress needed to break a solid material
Brittle - (answer)Snaps without bending or stretching when subject to stress
Centre of mass - (answer)Point through which a single force on the body has no turning affect
Charge carriers - (answer)Charged particles that move through substance when PD applied across it
Kirchoff's 1st Law - (answer)Current passing through 2 or more components in series is the same
through each component
At a junction the total current in = total current out
Kirchoff's 2 Law - (answer)2 or more components in series - total PD across all the components is = to
sum of the PD's across each component
Sum of emf's around complete loop = sum of PD's around the loop
Coherent - (answer)Constant phase difference and same frequency
,PHYSICS A LEVEL AQA (LATEST 2025/2026) STUDY GUIDE WITH COMPLETE SOLUTIONS
Conservation rules - (answer)Rule that:
Baryon no
Lepton no
Charge
Energy
Momentum
always conserved in interactions
When is strangeness conserved? - (answer)Strong interactions
How are strange particles created? - (answer)Strong interactions
How to strange particles decay? - (answer)Weak interactions
Couple - (answer)Pair of equal and opposite forces acting upon the same body but not along the same
line
Critical angle - (answer)The angle of incidence of a light ray must exceed this angle for total internal
reflection to occur
Critical temperature - (answer)Temperature at or below which a superconducting material has zero
resistivity
Cycle - (answer)Interval for an oscillating particle from a certain displacement and velocity to the next
time the particle has identical displacement and velocity
de Broglie hypothesis - (answer)Matter particles have a wave-like nature
, PHYSICS A LEVEL AQA (LATEST 2025/2026) STUDY GUIDE WITH COMPLETE SOLUTIONS
de Broglie wavelength - (answer)Wavelength of a matter particle
deexcitation - (answer)process by which atom loses energy by photon emission as electron moves to
lower energy level - inner shell
denisty - (answer)mass per unit volume for substance
diffraction - (answer)spreading out of waves that pass through gap or near edge
diffraction grating - (answer)plate with close parallel slits on it
dispersion - (answer)splitting of beam of white light into colours by prism
displacement - (answer)distance in a given direction from equilibrium position
drag force - (answer)force of fluid resistance on an object moving through fluid
ductile - (answer)stretches easily without breaking
efficiency - (answer)ratio of useful energy transferred to energy supplied to it
output power/input power
elastic limit - (answer)point beyond which wire is permanently stretched
elasticity - (answer)property of solid that allows it to regain shape after being deformed
