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RUN REVIEW · Physics · Units 3 & 4

argiewalls

11 Sep 2026, 8:50 a.m.

35Serious score
01 During a one-minute revision round: The electric field direction is the direction of force on a
A negative electron This does not satisfy the stated relationship.
B neutron This does not satisfy the stated relationship.
C magnetic north pole This does not satisfy the stated relationship.
D positive test charge Field direction is defined using a positive test charge.

Written for icaijy.com · U3 · Electric fields · answered at 1227 ms

02 A student is checking a worked solution. Diffraction is most significant when aperture width is
A comparable to the wavelength Spreading becomes prominent at wavelength-scale openings.
B independent of wavelength This does not satisfy the stated relationship.
C many orders larger than wavelength This does not satisfy the stated relationship.
D exactly zero frequency This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Diffraction · answered at 2683 ms

03 Which response best completes this VCE-style item? Two coherent waves arrive in phase. They produce
A destructive interference This does not satisfy the stated relationship.
B photoelectric emission This does not satisfy the stated relationship.
C constructive interference Their displacements reinforce.
D polarisation only This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Waves · answered at 4798 ms

04 A student is checking a worked solution. For constant mass, the net force equals
A \(mv^2\) always This does not satisfy the stated relationship.
B \(\vec p/t^2\) This does not satisfy the stated relationship.
C \(m\vec a\) Newton’s second law gives net force as mass times acceleration.
D \(m/\vec a\) This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Dynamics · answered at 6189 ms

05 During a one-minute revision round: After three half-lives, the undecayed fraction is
A \(1/8\) \((1/2)^3=1/8\).
B \(1/6\) This does not satisfy the stated relationship.
C \(3/8\) This does not satisfy the stated relationship.
D \(1/3\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Half-life · answered at 7507 ms

06 A student is checking a worked solution. Increasing sound amplitude most directly increases
A intensity Greater amplitude carries more energy per area per time.
B wave speed in the same medium This does not satisfy the stated relationship.
C frequency This does not satisfy the stated relationship.
D wavelength at fixed speed and frequency This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Sound · answered at 9037 ms

07 During melting at constant pressure, added energy mainly
A destroys energy This does not satisfy the stated relationship.
B increases particle potential energy Energy changes arrangement while temperature remains constant.
C reduces internal energy This does not satisfy the stated relationship.
D increases temperature continuously This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Thermal physics · answered at 11110 ms

08 Which response best completes this VCE-style item? The gradient of a displacement–time graph gives
A acceleration This does not satisfy the stated relationship.
B velocity Velocity is the rate of change of displacement.
C force This does not satisfy the stated relationship.
D momentum This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Motion · answered at 12864 ms

09 Wave frequency is determined by the
A observer’s clock only This does not satisfy the stated relationship.
B source The source sets the oscillation frequency.
C amplitude This does not satisfy the stated relationship.
D medium alone This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Waves · answered at 14265 ms

10 Which response best completes this VCE-style item? Above threshold, maximum photoelectron kinetic energy increases with
A exposure time only This does not satisfy the stated relationship.
B frequency \(K_{max}=hf-\phi\).
C surface area only This does not satisfy the stated relationship.
D intensity only This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Photoelectric effect · answered at 15872 ms

11 Which response best completes this VCE-style item? Increasing sound amplitude most directly increases
A wave speed in the same medium This does not satisfy the stated relationship.
B frequency This does not satisfy the stated relationship.
C intensity Greater amplitude carries more energy per area per time.
D wavelength at fixed speed and frequency This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Sound · answered at 18459 ms

12 During a one-minute revision round: Wave frequency is determined by the
A observer’s clock only This does not satisfy the stated relationship.
B medium alone This does not satisfy the stated relationship.
C source The source sets the oscillation frequency.
D amplitude This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Waves · answered at 20154 ms

13 The gradient of a displacement–time graph gives
A velocity Velocity is the rate of change of displacement.
B force This does not satisfy the stated relationship.
C momentum This does not satisfy the stated relationship.
D acceleration This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Motion · answered at 22502 ms

14 An ideal black body is a perfect
A mirror at every wavelength This does not satisfy the stated relationship.
B absorber and emitter of radiation A black body absorbs and emits electromagnetic radiation ideally.
C source of alpha particles This does not satisfy the stated relationship.
D thermal insulator This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Radiation · answered at 23724 ms

15 An ideal step-up transformer increases voltage and
A increases current This does not satisfy the stated relationship.
B increases power This does not satisfy the stated relationship.
C changes AC to DC This does not satisfy the stated relationship.
D decreases current Ideal input and output powers are equal.

Written for icaijy.com · U3 · Transformers · answered at 26769 ms

16 During a one-minute revision round: The centripetal force on a satellite in circular orbit is supplied by
A gravity Gravity points towards the orbital centre.
B a magnetic force This does not satisfy the stated relationship.
C air resistance This does not satisfy the stated relationship.
D its engines continuously This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Circular motion · answered at 28480 ms

17 A student is checking a worked solution. Temperature is most directly related to the particles’ average
A electric charge This does not satisfy the stated relationship.
B rest mass This does not satisfy the stated relationship.
C gravitational potential energy This does not satisfy the stated relationship.
D translational kinetic energy Temperature tracks average random translational kinetic energy.

Written for icaijy.com · U1 · Thermal physics · answered at 31262 ms

18 During a one-minute revision round: Two components connected in parallel have the same
A current in every branch This does not satisfy the stated relationship.
B resistance This does not satisfy the stated relationship.
C power This does not satisfy the stated relationship.
D potential difference Both ends connect to the same two nodes.

Written for icaijy.com · U1 · Circuits · answered at 33288 ms

19 A student is checking a worked solution. The energy of one photon is
A \(E=hf\) Photon energy is proportional to frequency.
B \(E=qV^2\) This does not satisfy the stated relationship.
C \(E=h/f\) This does not satisfy the stated relationship.
D \(E=mv\) This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Photons · answered at 35325 ms

20 Which response best completes this VCE-style item? Conventional current in an external circuit is opposite to the drift of
A photons This does not satisfy the stated relationship.
B neutrons This does not satisfy the stated relationship.
C positive ions in a metal lattice This does not satisfy the stated relationship.
D electrons Electrons carry charge opposite to conventional-current direction.

Written for icaijy.com · U1 · Electricity · answered at 36839 ms

21 A student is checking a worked solution. Rest energy is given by
A \(E_0=m/c^2\) This does not satisfy the stated relationship.
B \(E_0=mc^2\) Mass has rest-energy equivalent mc².
C \(E_0=mc\) This does not satisfy the stated relationship.
D \(E_0=mv\) This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Relativity · answered at 38649 ms

22 During a one-minute revision round: Moving a positive charge against an electric field generally
A decreases its charge This does not satisfy the stated relationship.
B increases electric potential energy Work against the electric force stores potential energy.
C removes its mass This does not satisfy the stated relationship.
D leaves potential energy necessarily zero This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Electric potential · answered at 40351 ms

23 The area under a velocity–time graph gives
A acceleration This does not satisfy the stated relationship.
B power This does not satisfy the stated relationship.
C displacement Integrating velocity over time gives displacement.
D force This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Motion · answered at 42100 ms

24 A student is checking a worked solution. A perfectly inelastic collision conserves
A momentum but not kinetic energy Objects stick; momentum is conserved in isolation but kinetic energy is transformed.
B the speed of each object This does not satisfy the stated relationship.
C neither momentum nor energy This does not satisfy the stated relationship.
D kinetic energy but not momentum This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Collisions · answered at 44466 ms

25 Two coherent waves arrive in phase. They produce
A photoelectric emission This does not satisfy the stated relationship.
B destructive interference This does not satisfy the stated relationship.
C constructive interference Their displacements reinforce.
D polarisation only This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Waves · answered at 45803 ms

26 Which response best completes this VCE-style item? Two components connected in parallel have the same
A potential difference Both ends connect to the same two nodes.
B resistance This does not satisfy the stated relationship.
C current in every branch This does not satisfy the stated relationship.
D power This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Circuits · answered at 47213 ms

27 A student is checking a worked solution. Two coherent waves arrive in phase. They produce
A constructive interference Their displacements reinforce.
B photoelectric emission This does not satisfy the stated relationship.
C polarisation only This does not satisfy the stated relationship.
D destructive interference This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Waves · answered at 48479 ms

28 During a one-minute revision round: The de Broglie wavelength of a particle is
A \(\lambda=p/h\) This does not satisfy the stated relationship.
B \(\lambda=hp\) This does not satisfy the stated relationship.
C \(\lambda=h/p\) Matter wavelength is inversely proportional to momentum.
D \(\lambda=hf\) This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Matter waves · answered at 50247 ms

29 During a one-minute revision round: An ideal black body is a perfect
A thermal insulator This does not satisfy the stated relationship.
B mirror at every wavelength This does not satisfy the stated relationship.
C source of alpha particles This does not satisfy the stated relationship.
D absorber and emitter of radiation A black body absorbs and emits electromagnetic radiation ideally.

Written for icaijy.com · U1 · Radiation · answered at 51947 ms

30 A student is checking a worked solution. Below the threshold frequency, increasing light intensity causes
A emission after a fixed delay This does not satisfy the stated relationship.
B no photoelectron emission Individual photons still lack sufficient energy.
C the threshold frequency to decrease This does not satisfy the stated relationship.
D higher maximum electron energy This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Photoelectric effect · answered at 53901 ms

31 A student is checking a worked solution. A device receives 100 J and delivers 75 J usefully. Its efficiency is
A 25% This does not satisfy the stated relationship.
B 133% This does not satisfy the stated relationship.
C 75% Useful output divided by input is 0.75.
D 100% This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Efficiency · answered at 54992 ms

32 A student is checking a worked solution. Conventional current in an external circuit is opposite to the drift of
A electrons Electrons carry charge opposite to conventional-current direction.
B photons This does not satisfy the stated relationship.
C positive ions in a metal lattice This does not satisfy the stated relationship.
D neutrons This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Electricity · answered at 56305 ms

33 During a one-minute revision round: An alpha particle contains
A two protons and two neutrons It is a helium-4 nucleus.
B one electron This does not satisfy the stated relationship.
C one proton and one neutron This does not satisfy the stated relationship.
D two photons This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Nuclear physics · answered at 57568 ms

34 The magnetic force on a moving charge is zero when velocity is
A at 45° only This does not satisfy the stated relationship.
B perpendicular to the field This does not satisfy the stated relationship.
C opposite to its momentum This does not satisfy the stated relationship.
D parallel to the field \(F=qvB\sin\theta\), so parallel motion gives zero.

Written for icaijy.com · U3 · Magnetic forces · answered at 59160 ms

35 During a one-minute revision round: A device receives 100 J and delivers 75 J usefully. Its efficiency is
A 75% Useful output divided by input is 0.75.
B 25% This does not satisfy the stated relationship.
C 100% This does not satisfy the stated relationship.
D 133% This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Efficiency · answered at 60000 ms

36 During a one-minute revision round: A passenger lurches forward when a car brakes because of
A loss of mass This does not satisfy the stated relationship.
B a forward engine force This does not satisfy the stated relationship.
C inertia The passenger tends to maintain velocity unless acted on by a net force.
D weight increasing This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Newtonian motion · not answered before time expired

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