argiewalls · Physics · Units 3 & 4

01 During a one-minute revision round: A perfectly inelastic collision conserves

A momentum but not kinetic energy Objects stick; momentum is conserved in isolation but kinetic energy is transformed.

B neither momentum nor energy This does not satisfy the stated relationship.

C the speed of each object 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 1666 ms

02 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 2916 ms

03 Which response best completes this VCE-style item? 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 translational kinetic energy Temperature tracks average random translational kinetic energy.

D gravitational potential energy This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Thermal physics · answered at 4396 ms

04 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 · answered at 5376 ms

05 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 6433 ms

06 During a one-minute revision round: Lenz’s law states that induced current acts to

A reinforce every flux change This does not satisfy the stated relationship.

B make flux zero at all times This does not satisfy the stated relationship.

C oppose the change in magnetic flux The opposing response is consistent with energy conservation.

D remove resistance This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Electromagnetic induction · answered at 7702 ms

07 At distance \(r\) from a point mass, gravitational field strength varies as

A \(1/r^2\) The inverse-square law applies.

B \(1/r\) This does not satisfy the stated relationship.

C \(r\) This does not satisfy the stated relationship.

D \(r^2\) This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Gravitation · answered at 9147 ms

08 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 11480 ms

09 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 12949 ms

10 A student is checking a worked solution. Near Earth, gravitational potential energy change is

A \(mv\) This does not satisfy the stated relationship.

B \(ma\Delta h\) This does not satisfy the stated relationship.

C \(m/gh\) This does not satisfy the stated relationship.

D \(mg\Delta h\) For a uniform field near Earth, ΔUg = mgΔh.

Written for icaijy.com · U2 · Energy · answered at 14450 ms

11 Which response best completes this VCE-style item? Error bars that overlap substantially mean the measured values are

A not clearly distinguishable within stated uncertainty The uncertainties do not support a clear difference.

B invalid by definition This does not satisfy the stated relationship.

C certainly different This does not satisfy the stated relationship.

D certainly identical This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Experimental design · answered at 16704 ms

12 Which response best completes this VCE-style item? According to special relativity, the speed of light in vacuum is

A the same for all inertial observers Invariant light speed is a postulate of special relativity.

B zero in the photon frame This does not satisfy the stated relationship.

C larger for observers moving toward the source This does not satisfy the stated relationship.

D dependent on source speed This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Relativity · answered at 18081 ms

13 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 19345 ms

14 During a one-minute revision round: Rest energy is given by

A \(E_0=mc^2\) Mass has rest-energy equivalent mc².

B \(E_0=mv\) This does not satisfy the stated relationship.

C \(E_0=m/c^2\) This does not satisfy the stated relationship.

D \(E_0=mc\) This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Relativity · answered at 22543 ms

15 According to special relativity, the speed of light in vacuum is

A the same for all inertial observers Invariant light speed is a postulate of special relativity.

B dependent on source speed This does not satisfy the stated relationship.

C zero in the photon frame This does not satisfy the stated relationship.

D larger for observers moving toward the source This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Relativity · answered at 23638 ms

16 Which response best completes this VCE-style item? An ideal black body is a perfect

A absorber and emitter of radiation A black body absorbs and emits electromagnetic radiation ideally.

B source of alpha particles This does not satisfy the stated relationship.

C mirror at every wavelength 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 24802 ms

17 Which response best completes this VCE-style item? A moving clock is observed from an inertial frame to run

A at a rate set by its mass only This does not satisfy the stated relationship.

B slow Time dilation increases the observed interval between ticks.

C fast This does not satisfy the stated relationship.

D backwards This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Relativity · answered at 26619 ms

18 Which response best completes this VCE-style item? Beta-minus decay converts a neutron into

A two neutrons This does not satisfy the stated relationship.

B a photon only This does not satisfy the stated relationship.

C an alpha particle This does not satisfy the stated relationship.

D a proton, electron and antineutrino Charge and lepton number are conserved.

Written for icaijy.com · U1 · Nuclear physics · answered at 28078 ms

19 A straight-line graph with a non-zero intercept most clearly indicates

A random error only This does not satisfy the stated relationship.

B proof of causation This does not satisfy the stated relationship.

C a possible systematic offset A persistent intercept may reveal calibration or background bias.

D zero uncertainty This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Data analysis · answered at 29814 ms

20 During a one-minute revision round: Refraction occurs because light

A changes speed between media A speed change produces a direction change except at normal incidence.

B changes frequency at the boundary This does not satisfy the stated relationship.

C loses all energy This does not satisfy the stated relationship.

D becomes charged This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Light · answered at 31555 ms

21 Which response best completes this VCE-style item? When a wave enters a new medium, its frequency usually

A changes in inverse proportion to amplitude This does not satisfy the stated relationship.

B becomes zero This does not satisfy the stated relationship.

C must double This does not satisfy the stated relationship.

D remains constant The boundary changes speed and wavelength, not source frequency.

Written for icaijy.com · U2 · Waves · answered at 34041 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 35269 ms

23 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 36834 ms

24 Which response best completes this VCE-style item? The double-slit interference pattern most directly demonstrates light’s

A wave behaviour Interference is characteristic of waves.

B sound speed This does not satisfy the stated relationship.

C rest mass This does not satisfy the stated relationship.

D electric charge This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Models of light · answered at 37925 ms

25 Which response best completes this VCE-style item? The energy of one photon is

A \(E=mv\) This does not satisfy the stated relationship.

B \(E=hf\) Photon energy is proportional to frequency.

C \(E=qV^2\) This does not satisfy the stated relationship.

D \(E=h/f\) This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Photons · answered at 41746 ms

26 During a one-minute revision round: Error bars that overlap substantially mean the measured values are

A certainly identical This does not satisfy the stated relationship.

B invalid by definition This does not satisfy the stated relationship.

C certainly different This does not satisfy the stated relationship.

D not clearly distinguishable within stated uncertainty The uncertainties do not support a clear difference.

Written for icaijy.com · U4 · Experimental design · answered at 43634 ms

27 A student is checking a worked solution. The area under a velocity–time graph gives

A displacement Integrating velocity over time gives displacement.

B acceleration This does not satisfy the stated relationship.

C power This does not satisfy the stated relationship.

D force This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Motion · answered at 45503 ms

28 During a one-minute revision round: A straight-line graph with a non-zero intercept most clearly indicates

A zero uncertainty This does not satisfy the stated relationship.

B random error only This does not satisfy the stated relationship.

C a possible systematic offset A persistent intercept may reveal calibration or background bias.

D proof of causation This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Data analysis · answered at 47405 ms

29 During a one-minute revision round: The magnetic force on a moving charge is zero when velocity is

A opposite to its momentum This does not satisfy the stated relationship.

B at 45° only This does not satisfy the stated relationship.

C parallel to the field \(F=qvB\sin\theta\), so parallel motion gives zero.

D perpendicular to the field This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Magnetic forces · answered at 48670 ms

30 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 50048 ms

31 During a one-minute revision round: According to special relativity, the speed of light in vacuum is

A dependent on source speed This does not satisfy the stated relationship.

B the same for all inertial observers Invariant light speed is a postulate of special relativity.

C larger for observers moving toward the source This does not satisfy the stated relationship.

D zero in the photon frame This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Relativity · answered at 52017 ms

32 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 53893 ms

33 Which response best completes this VCE-style item? A photon is the exchange particle for the

A weak interaction This does not satisfy the stated relationship.

B strong interaction This does not satisfy the stated relationship.

C gravitational interaction in the Standard Model This does not satisfy the stated relationship.

D electromagnetic interaction Photons mediate electromagnetic interactions.

Written for icaijy.com · U4 · Standard Model · answered at 55527 ms

34 A student is checking a worked solution. For fixed transmitted power, increasing voltage reduces line loss because current

A becomes alternating This does not satisfy the stated relationship.

B is unchanged This does not satisfy the stated relationship.

C increases This does not satisfy the stated relationship.

D decreases Loss \(P_{loss}=I^2R\), so lower current reduces heating.

Written for icaijy.com · U3 · Power transmission · answered at 57180 ms

35 The independent variable is the quantity that is

A kept constant This does not satisfy the stated relationship.

B ignored This does not satisfy the stated relationship.

C deliberately changed It is manipulated to test its effect.

D measured as the outcome This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Experimental design · answered at 58482 ms

36 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 60000 ms

37 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 · not answered before time expired