argiewalls · Physics · Units 3 & 4

01 A student is checking a worked solution. The independent variable is the quantity that is

A ignored This does not satisfy the stated relationship.

B kept constant 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 1647 ms

02 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 wavelength at fixed speed and frequency This does not satisfy the stated relationship.

D intensity Greater amplitude carries more energy per area per time.

Written for icaijy.com · U2 · Sound · answered at 3472 ms

03 A student is checking a worked solution. An ideal black body is a perfect

A mirror at every wavelength This does not satisfy the stated relationship.

B thermal insulator This does not satisfy the stated relationship.

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

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

Written for icaijy.com · U1 · Radiation · answered at 5475 ms

04 Which response best completes this VCE-style item? 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 7415 ms

05 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 9227 ms

06 A student is checking a worked solution. The double-slit interference pattern most directly demonstrates light’s

A wave behaviour Interference is characteristic of waves.

B rest mass This does not satisfy the stated relationship.

C electric charge This does not satisfy the stated relationship.

D sound speed This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Models of light · answered at 11435 ms

07 Which response best completes this VCE-style item? Adjacent nodes in a standing wave are separated by

A \(\lambda/4\) This does not satisfy the stated relationship.

B \(\lambda\) This does not satisfy the stated relationship.

C \(\lambda/2\) Nodes repeat every half-wavelength.

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

Written for icaijy.com · U4 · Standing waves · answered at 13373 ms

08 Which response best completes this VCE-style item? A 12 V device drawing 2.0 A uses power

A 144 W This does not satisfy the stated relationship.

B 6 W This does not satisfy the stated relationship.

C 10 W This does not satisfy the stated relationship.

D 24 W \(P=VI=24\ \mathrm W\).

Written for icaijy.com · U1 · Electrical energy · answered at 15211 ms

09 During a one-minute revision round: For constant mass, the net force equals

A \(m/\vec a\) This does not satisfy the stated relationship.

B \(mv^2\) always This does not satisfy the stated relationship.

C \(\vec p/t^2\) This does not satisfy the stated relationship.

D \(m\vec a\) Newton’s second law gives net force as mass times acceleration.

Written for icaijy.com · U2 · Dynamics · answered at 17619 ms

10 For constant mass, the net force equals

A \(m/\vec a\) 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 \(mv^2\) always This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Dynamics · answered at 19779 ms

11 A student is checking a worked solution. A 12 V device drawing 2.0 A uses power

A 10 W This does not satisfy the stated relationship.

B 6 W This does not satisfy the stated relationship.

C 144 W This does not satisfy the stated relationship.

D 24 W \(P=VI=24\ \mathrm W\).

Written for icaijy.com · U1 · Electrical energy · answered at 21202 ms

12 Which response best completes this VCE-style item? Lenz’s law states that induced current acts to

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

B reinforce every flux change 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 23744 ms

13 An alpha particle contains

A one electron This does not satisfy the stated relationship.

B one proton and one neutron This does not satisfy the stated relationship.

C two photons This does not satisfy the stated relationship.

D two protons and two neutrons It is a helium-4 nucleus.

Written for icaijy.com · U1 · Nuclear physics · answered at 25823 ms

14 Error bars that overlap substantially mean the measured values are

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

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

C certainly identical This does not satisfy the stated relationship.

D certainly different This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Experimental design · answered at 28061 ms

15 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 30078 ms

16 Beta-minus decay converts a neutron into

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

B two neutrons This does not satisfy the stated relationship.

C a photon only 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 32546 ms

17 A student is checking a worked solution. Two resistors in series always carry the same

A current There is one path for charge flow.

B power This does not satisfy the stated relationship.

C voltage This does not satisfy the stated relationship.

D resistance This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Circuits · answered at 34437 ms

18 During a one-minute revision round: A result close to repeated measurements but far from the accepted value is

A accurate but imprecise This does not satisfy the stated relationship.

B precise but inaccurate Small spread means precision; bias from accepted value means inaccuracy.

C both accurate and precise This does not satisfy the stated relationship.

D neither measurable nor valid This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Measurement · answered at 40391 ms

19 A student is checking a worked solution. A photon is the exchange particle for the

A electromagnetic interaction Photons mediate electromagnetic interactions.

B weak interaction This does not satisfy the stated relationship.

C strong interaction This does not satisfy the stated relationship.

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

Written for icaijy.com · U4 · Standard Model · answered at 42488 ms

20 Which response best completes this VCE-style item? The centripetal force on a satellite in circular orbit is supplied by

A its engines continuously This does not satisfy the stated relationship.

B air resistance This does not satisfy the stated relationship.

C a magnetic force This does not satisfy the stated relationship.

D gravity Gravity points towards the orbital centre.

Written for icaijy.com · U3 · Circular motion · answered at 44422 ms

21 Which response best completes this VCE-style item? A straight-line graph with a non-zero intercept most clearly indicates

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

B zero uncertainty This does not satisfy the stated relationship.

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

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

Written for icaijy.com · U4 · Data analysis · answered at 47737 ms

22 Conventional current in an external circuit is opposite to the drift of

A neutrons This does not satisfy the stated relationship.

B positive ions in a metal lattice This does not satisfy the stated relationship.

C photons 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 50862 ms

23 During a one-minute revision round: 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 53430 ms

24 Below the threshold frequency, increasing light intensity causes

A higher maximum electron energy This does not satisfy the stated relationship.

B the threshold frequency to decrease This does not satisfy the stated relationship.

C emission after a fixed delay This does not satisfy the stated relationship.

D no photoelectron emission Individual photons still lack sufficient energy.

Written for icaijy.com · U4 · Photoelectric effect · answered at 55685 ms

25 Which response best completes this VCE-style item? An ideal step-up transformer increases voltage and

A changes AC to DC This does not satisfy the stated relationship.

B increases power This does not satisfy the stated relationship.

C decreases current Ideal input and output powers are equal.

D increases current This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Transformers · answered at 59729 ms