AQA A LEVEL PHYSICS 7408 LATEST UPDATED ACTUAL 2025
FINAL EXAM WITH COMPLETE DETAILED QUESTIONS AND
CORRECT VERIFIED ANSWERS ALREADY A+ GRADED
Vector
ANSWER-A quantity that has magnitude and direction
Absolute Zero
ANSWER-Lowest possible temperature, 0K, object has minimum internal energy.
Scalar
ANSWER-A quantity that only has magnitude
Acceleration
ANSWER-Change of velocity per unit time.
free body diagram
ANSWER-a diagram showing all the forces acting on an object
Activity of a Radioactive Isotope
ANSWER-Number of nuclei of the isotope that disintegrate per second.
,Energy: scalar or vector?
ANSWER-scalar
Becquerel (Bq)
ANSWER-Unit of radioactive activity, 1Bq = 1 disintegration per second.
Acceleration: scalar or vector?
ANSWER-vector
Amplitude
ANSWER-Maximum displacement from equilibrium of oscillating object.
Displacement (scalar or vector)
ANSWER-vector
Angular Displacement
ANSWER-Angle an object in circular motion turns through in radians.
𝜃 = 𝜔t
Speed: scalar or vector?
ANSWER-scalar
,Angular Speed (ω)
ANSWER-Rate of change of angular displacement of object in circular motion.
𝜔 = 2𝜋f
Annihilation
ANSWER-When a particle and its antiparticle meet, they destroy each other to produce 2 photons of
equal energy.
Here the minimum energy of each photon produced = hf(min) = rest energy of the particle.
Antiparticle
ANSWER-Equal rest mass and equal and opposite charge to particle.
Atomic Number, Z
ANSWER-Number of protons in nucleus of atom.
Avogadro Constant
ANSWER-The number of atoms in 12g of carbon-12. Used to define the mole.
Back emf
ANSWER-The emf induced in the spinning coil of electric motor or in any coil in which the current is
changing. A back emf acts against the change of applied pd.
, Background Radiation
ANSWER-Radiation due to naturally occurring substances in the environment e.g. radon gas, cosmic
rays, ground and buildings.
Binding Energy
ANSWER-Work done to separate a nucleus into its constituent nucleons (neutrons and protons).
E = mass defect x c²
Binding Energy per Nucleon
ANSWER-Average work done per nucleon to separate nucleus into constituent parts. Higher the value,
the more stable the nucleus.
BE per nucleon = BE of a nucleus / mass number.
Boyle's Law
ANSWER-For a fixed mass of gas at a constant temperature, its pressure x volume is constant. Gases that
obey this are an ideal gas.
Boltzmann Constant (k)
ANSWER-Molar gas constant divided by Avogadro number.
Brittle
ANSWER-Snaps without stretching or bending when subject to stress.
FINAL EXAM WITH COMPLETE DETAILED QUESTIONS AND
CORRECT VERIFIED ANSWERS ALREADY A+ GRADED
Vector
ANSWER-A quantity that has magnitude and direction
Absolute Zero
ANSWER-Lowest possible temperature, 0K, object has minimum internal energy.
Scalar
ANSWER-A quantity that only has magnitude
Acceleration
ANSWER-Change of velocity per unit time.
free body diagram
ANSWER-a diagram showing all the forces acting on an object
Activity of a Radioactive Isotope
ANSWER-Number of nuclei of the isotope that disintegrate per second.
,Energy: scalar or vector?
ANSWER-scalar
Becquerel (Bq)
ANSWER-Unit of radioactive activity, 1Bq = 1 disintegration per second.
Acceleration: scalar or vector?
ANSWER-vector
Amplitude
ANSWER-Maximum displacement from equilibrium of oscillating object.
Displacement (scalar or vector)
ANSWER-vector
Angular Displacement
ANSWER-Angle an object in circular motion turns through in radians.
𝜃 = 𝜔t
Speed: scalar or vector?
ANSWER-scalar
,Angular Speed (ω)
ANSWER-Rate of change of angular displacement of object in circular motion.
𝜔 = 2𝜋f
Annihilation
ANSWER-When a particle and its antiparticle meet, they destroy each other to produce 2 photons of
equal energy.
Here the minimum energy of each photon produced = hf(min) = rest energy of the particle.
Antiparticle
ANSWER-Equal rest mass and equal and opposite charge to particle.
Atomic Number, Z
ANSWER-Number of protons in nucleus of atom.
Avogadro Constant
ANSWER-The number of atoms in 12g of carbon-12. Used to define the mole.
Back emf
ANSWER-The emf induced in the spinning coil of electric motor or in any coil in which the current is
changing. A back emf acts against the change of applied pd.
, Background Radiation
ANSWER-Radiation due to naturally occurring substances in the environment e.g. radon gas, cosmic
rays, ground and buildings.
Binding Energy
ANSWER-Work done to separate a nucleus into its constituent nucleons (neutrons and protons).
E = mass defect x c²
Binding Energy per Nucleon
ANSWER-Average work done per nucleon to separate nucleus into constituent parts. Higher the value,
the more stable the nucleus.
BE per nucleon = BE of a nucleus / mass number.
Boyle's Law
ANSWER-For a fixed mass of gas at a constant temperature, its pressure x volume is constant. Gases that
obey this are an ideal gas.
Boltzmann Constant (k)
ANSWER-Molar gas constant divided by Avogadro number.
Brittle
ANSWER-Snaps without stretching or bending when subject to stress.
