That y8 kid 🤣 - bot · guest · Physics

01 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 100 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 100 ms

03 Which response best completes this VCE-style item? Near Earth, gravitational potential energy change is

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

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

C \(ma\Delta h\) 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 100 ms

04 Diffraction is most significant when aperture width is

A exactly zero frequency This does not satisfy the stated relationship.

B comparable to the wavelength Spreading becomes prominent at wavelength-scale openings.

C many orders larger than wavelength This does not satisfy the stated relationship.

D independent of wavelength This does not satisfy the stated relationship.

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

05 Which response best completes this VCE-style item? 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 neither measurable nor valid This does not satisfy the stated relationship.

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

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

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

06 Which response best completes this VCE-style item? In an isolated collision, total

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

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

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

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

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

07 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 100 ms

08 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 100 ms

09 The double-slit interference pattern most directly demonstrates light’s

A electric charge This does not satisfy the stated relationship.

B sound speed This does not satisfy the stated relationship.

C rest mass This does not satisfy the stated relationship.

D wave behaviour Interference is characteristic of waves.

Written for icaijy.com · U4 · Models of light · answered at 100 ms

10 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 100 ms

11 Impulse equals the change in

A kinetic energy This does not satisfy the stated relationship.

B momentum \(J=\Delta p\).

C power This does not satisfy the stated relationship.

D velocity only This does not satisfy the stated relationship.

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

12 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 100 ms

13 A student is checking a worked solution. When a wave enters a new medium, its frequency usually

A must double This does not satisfy the stated relationship.

B becomes zero This does not satisfy the stated relationship.

C changes in inverse proportion to amplitude 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 100 ms

14 Which response best completes this VCE-style item? Reducing uncertainty in position generally causes uncertainty in momentum to

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

B increase Position and momentum obey an inverse uncertainty relationship.

C become classical This does not satisfy the stated relationship.

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

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

15 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 100 ms

16 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 100 ms

17 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 100 ms

18 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 100 ms

19 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 100 ms

20 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