AQA A LEVEL PHYSICS PAPER 1 EXAM LATEST UPDATE 2025 ACTUAL
EXAM COMPLETE QUESTIONS AND CORRECT VERIFIED ANSWERS
|100%GUARANTEED PASS!!!
What is meant by work function (2) - CORRECT ANSWER-Minimum energy required by
an electron to escape from (1) a metal surface (1)
What is meant by ionisation energy? (2) - CORRECT ANSWER-Minimum energy
required to remove an electron from an atom (1) from the ground state (1)
Why do emitted electrons have a kinetic energy that varies up to a maximum value? (4)
- CORRECT ANSWER-Energy of a photon is fixed/constant (1)
Energy is required for electrons to overcome work function ø (1)
Electrons deeper into/below the surface of the metal require more energy to overcome
work function and therefore have less KE(1)
Maximum KE = Energy of photon - work function ø (1)
Explain how (bright ring) diagram is evidence of the wave-particle duality of electrons? -
CORRECT ANSWER-Diffraction pattern maxima/minima (bright and dark areas) (1)
Diffraction is a property of waves- proves wave-behaviour of electrons (1)
What is meant by the ground state? - CORRECT ANSWER-The lowest energy state of
an atom
state what is meant by 'non-ohmic' - CORRECT ANSWER-resistance not constant (V
not directly proportional to I)
example of non-ohmic conductor - CORRECT ANSWER-filament lamp/LDR/thermistor
Advantage of using a stranded cable rather than a solid cable of the same cross-
sectional area - CORRECT ANSWER-larger surface area so better heat dissipation
Explain what is meant by resonance (4) - CORRECT ANSWER-driving frequency =
natural frequency (1) vibrations of large amplitude produced (1) max energy transferred
at resonance (1) phase difference between driver and oscillator is 90 degrees (pi/2
rads)
Explain what is meant by forced vibrations (5) - CORRECT ANSWER-forced vibrations
= periodic force applied (1) frequency determined by as frequency of oscillator (1) phase
difference is 180 degrees (pi rads) (1) frequency of driver > frequency of oscillator (1)
amplitude small at high frequency and vice versa
explain what is meant by damping - CORRECT ANSWER-removes energy from
oscillating system (OR when force opposes motion of oscillator)
, how does damping affect resonance - CORRECT ANSWER-reduces amplitude at
resonant frequency
name two types of potential energy involved when a mass-spring system performs
vertical SHM - CORRECT ANSWER-elastic potential and gravitational potential
describe what is meant by the period of an oscilation - CORRECT ANSWER-time taken
for one complete oscillation
state conditions necessary for SHM (2) - CORRECT ANSWER-acceleration
proportional to displacement (1) directed towards mean position
A particle that moves uniformly in a circular path is accelerating yet moving at a
constant speed. Explain this statement by reference to the physical principles involved
(4) - CORRECT ANSWER-speed scalar velocity vector (1) direction changes
continuously (1) velocity changes (1) acceleration is rate of change of velocity
What is meant by damping - CORRECT ANSWER-When force opposes motion
Current - CORRECT ANSWER-Rate of flow of charge
Coulomb - CORRECT ANSWER-The amount of charge passing a point when a current
of 1A flows for 1s
Potential difference - CORRECT ANSWER-The work done per unit charge in moving a
small point positive charge between two points
Threshold Voltage for a Diode - CORRECT ANSWER-The voltage at which a current
will begin to flow at, assumed to be +0.6V if not stated
Reverse Bias - CORRECT ANSWER-When very little currency can flow in the reverse
direction of a diode
Variable Resistor - CORRECT ANSWER-Can be used to change the current through a
circuit can also be called a rheostat
NTC Thermistor - CORRECT ANSWER-(A type of semiconductor) that has decreasing
resistance when its temperature increases - negative temperature coefficient
Transitional Temperature - CORRECT ANSWER-The critical temperature at and below
which a superconductor has zero resistivity
EXAM COMPLETE QUESTIONS AND CORRECT VERIFIED ANSWERS
|100%GUARANTEED PASS!!!
What is meant by work function (2) - CORRECT ANSWER-Minimum energy required by
an electron to escape from (1) a metal surface (1)
What is meant by ionisation energy? (2) - CORRECT ANSWER-Minimum energy
required to remove an electron from an atom (1) from the ground state (1)
Why do emitted electrons have a kinetic energy that varies up to a maximum value? (4)
- CORRECT ANSWER-Energy of a photon is fixed/constant (1)
Energy is required for electrons to overcome work function ø (1)
Electrons deeper into/below the surface of the metal require more energy to overcome
work function and therefore have less KE(1)
Maximum KE = Energy of photon - work function ø (1)
Explain how (bright ring) diagram is evidence of the wave-particle duality of electrons? -
CORRECT ANSWER-Diffraction pattern maxima/minima (bright and dark areas) (1)
Diffraction is a property of waves- proves wave-behaviour of electrons (1)
What is meant by the ground state? - CORRECT ANSWER-The lowest energy state of
an atom
state what is meant by 'non-ohmic' - CORRECT ANSWER-resistance not constant (V
not directly proportional to I)
example of non-ohmic conductor - CORRECT ANSWER-filament lamp/LDR/thermistor
Advantage of using a stranded cable rather than a solid cable of the same cross-
sectional area - CORRECT ANSWER-larger surface area so better heat dissipation
Explain what is meant by resonance (4) - CORRECT ANSWER-driving frequency =
natural frequency (1) vibrations of large amplitude produced (1) max energy transferred
at resonance (1) phase difference between driver and oscillator is 90 degrees (pi/2
rads)
Explain what is meant by forced vibrations (5) - CORRECT ANSWER-forced vibrations
= periodic force applied (1) frequency determined by as frequency of oscillator (1) phase
difference is 180 degrees (pi rads) (1) frequency of driver > frequency of oscillator (1)
amplitude small at high frequency and vice versa
explain what is meant by damping - CORRECT ANSWER-removes energy from
oscillating system (OR when force opposes motion of oscillator)
, how does damping affect resonance - CORRECT ANSWER-reduces amplitude at
resonant frequency
name two types of potential energy involved when a mass-spring system performs
vertical SHM - CORRECT ANSWER-elastic potential and gravitational potential
describe what is meant by the period of an oscilation - CORRECT ANSWER-time taken
for one complete oscillation
state conditions necessary for SHM (2) - CORRECT ANSWER-acceleration
proportional to displacement (1) directed towards mean position
A particle that moves uniformly in a circular path is accelerating yet moving at a
constant speed. Explain this statement by reference to the physical principles involved
(4) - CORRECT ANSWER-speed scalar velocity vector (1) direction changes
continuously (1) velocity changes (1) acceleration is rate of change of velocity
What is meant by damping - CORRECT ANSWER-When force opposes motion
Current - CORRECT ANSWER-Rate of flow of charge
Coulomb - CORRECT ANSWER-The amount of charge passing a point when a current
of 1A flows for 1s
Potential difference - CORRECT ANSWER-The work done per unit charge in moving a
small point positive charge between two points
Threshold Voltage for a Diode - CORRECT ANSWER-The voltage at which a current
will begin to flow at, assumed to be +0.6V if not stated
Reverse Bias - CORRECT ANSWER-When very little currency can flow in the reverse
direction of a diode
Variable Resistor - CORRECT ANSWER-Can be used to change the current through a
circuit can also be called a rheostat
NTC Thermistor - CORRECT ANSWER-(A type of semiconductor) that has decreasing
resistance when its temperature increases - negative temperature coefficient
Transitional Temperature - CORRECT ANSWER-The critical temperature at and below
which a superconductor has zero resistivity
