That y8 kid 🤣 - bot · guest · Physics

01 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 100 ms

02 During a one-minute revision round: Two resistors in series always carry the same

A power This does not satisfy the stated relationship.

B resistance This does not satisfy the stated relationship.

C current There is one path for charge flow.

D voltage This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Circuits · answered at 100 ms

03 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 100 ms

04 Which response best completes this VCE-style item? For a projectile with negligible air resistance, total mechanical energy

A is zero at maximum height This does not satisfy the stated relationship.

B equals kinetic energy at all points This does not satisfy the stated relationship.

C remains constant Gravity is conservative.

D increases during descent This does not satisfy the stated relationship.

Written for icaijy.com · U3 · Energy · answered at 100 ms

05 During a one-minute revision round: Near Earth, gravitational potential energy change is

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

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

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

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

Written for icaijy.com · U2 · Energy · answered at 100 ms

06 A student is checking a worked solution. Two components connected in parallel have the same

A resistance This does not satisfy the stated relationship.

B current in every branch This does not satisfy the stated relationship.

C potential difference Both ends connect to the same two nodes.

D power This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Circuits · answered at 100 ms

07 During a one-minute revision round: The energy of one photon is

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

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

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 100 ms

08 During a one-minute revision round: A moving clock is observed from an inertial frame to run

A backwards This does not satisfy the stated relationship.

B fast This does not satisfy the stated relationship.

C slow Time dilation increases the observed interval between ticks.

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

Written for icaijy.com · U3 · Relativity · answered at 100 ms

09 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 100 ms

10 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 100 ms

11 A student is checking a worked solution. Beta-minus decay converts a neutron into

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

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

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

D two neutrons This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Nuclear physics · answered at 100 ms

12 During a one-minute revision round: Discrete atomic emission lines provide evidence for

A absence of photons This does not satisfy the stated relationship.

B quantised energy levels Only particular photon-energy differences are emitted.

C continuous electron energies only This does not satisfy the stated relationship.

D classical planetary orbits alone This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Atomic spectra · answered at 100 ms

13 Reducing uncertainty in position generally causes uncertainty in momentum to

A remain exactly fixed This does not satisfy the stated relationship.

B become classical This does not satisfy the stated relationship.

C increase Position and momentum obey an inverse uncertainty relationship.

D decrease to zero This does not satisfy the stated relationship.

Written for icaijy.com · U4 · Uncertainty · answered at 100 ms

14 In an isolated collision, total

A force is zero throughout This does not satisfy the stated relationship.

B momentum is conserved Internal impulses cancel, conserving total momentum.

C kinetic energy is always conserved This does not satisfy the stated relationship.

D speed of each object is conserved This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Momentum · answered at 100 ms

15 Which response best completes this VCE-style item? 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 100 ms

16 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 100 ms

17 During a one-minute revision round: Below the threshold frequency, increasing light intensity causes

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

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

C higher maximum electron energy 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 100 ms

18 Which response best completes this VCE-style item? The independent variable is the quantity that is

A measured as the outcome 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 kept constant This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Experimental design · answered at 100 ms

19 A student is checking a worked solution. 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 perpendicular to the field 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 100 ms

20 Which response best completes this VCE-style item? The de Broglie wavelength of a particle is

A \(\lambda=h/p\) Matter wavelength is inversely proportional to momentum.

B \(\lambda=p/h\) This does not satisfy the stated relationship.

C \(\lambda=hf\) This does not satisfy the stated relationship.

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

Written for icaijy.com · U4 · Matter waves · answered at 100 ms