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RUN REVIEW · Physics · Units 1 & 2

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11 Sep 2026, 9:04 p.m.

20Serious score
01 Which response best completes this VCE-style item? An alpha particle contains
A one electron This does not satisfy the stated relationship.
B two photons This does not satisfy the stated relationship.
C two protons and two neutrons It is a helium-4 nucleus.
D one proton and one neutron This does not satisfy the stated relationship.

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

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

Written for icaijy.com · U1 · Half-life · answered at 100 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 translational kinetic energy Temperature tracks average random translational kinetic energy.
C gravitational potential energy This does not satisfy the stated relationship.
D rest mass This does not satisfy the stated relationship.

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

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

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

05 A student is checking a worked solution. An alpha particle contains
A two photons This does not satisfy the stated relationship.
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 protons and two neutrons It is a helium-4 nucleus.

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

06 During a one-minute revision round: Increasing sound amplitude most directly increases
A intensity Greater amplitude carries more energy per area per time.
B frequency This does not satisfy the stated relationship.
C wave speed in the same medium 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 100 ms

07 Which response best completes this VCE-style item? Two resistors in series always carry the same
A resistance This does not satisfy the stated relationship.
B power 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

08 A student is checking a worked solution. A 12 V device drawing 2.0 A uses power
A 6 W This does not satisfy the stated relationship.
B 144 W This does not satisfy the stated relationship.
C 24 W \(P=VI=24\ \mathrm W\).
D 10 W This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Electrical energy · answered at 100 ms

09 Which response best completes this VCE-style item? For constant mass, the net force equals
A \(mv^2\) always This does not satisfy the stated relationship.
B \(m/\vec a\) 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 100 ms

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

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

11 During melting at constant pressure, added energy mainly
A increases particle potential energy Energy changes arrangement while temperature remains constant.
B destroys energy This does not satisfy the stated relationship.
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 100 ms

12 Near Earth, gravitational potential energy change is
A \(mg\Delta h\) For a uniform field near Earth, ΔUg = mgΔh.
B \(m/gh\) This does not satisfy the stated relationship.
C \(mv\) This does not satisfy the stated relationship.
D \(ma\Delta h\) This does not satisfy the stated relationship.

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

13 A result close to repeated measurements but far from the accepted value is
A neither measurable nor valid 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 accurate but imprecise This does not satisfy the stated relationship.

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

14 A student is checking a worked solution. After three half-lives, the undecayed fraction is
A \(1/3\) This does not satisfy the stated relationship.
B \(1/6\) This does not satisfy the stated relationship.
C \(3/8\) This does not satisfy the stated relationship.
D \(1/8\) \((1/2)^3=1/8\).

Written for icaijy.com · U1 · Half-life · answered at 100 ms

15 For uniform circular motion, acceleration points
A away from the centre This does not satisfy the stated relationship.
B tangent to the circle This does not satisfy the stated relationship.
C in the direction of velocity This does not satisfy the stated relationship.
D towards the centre Centripetal acceleration changes the velocity direction inward.

Written for icaijy.com · U2 · Circular motion · answered at 100 ms

16 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 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

17 Which response best completes this VCE-style item? Refraction occurs because light
A changes speed between media A speed change produces a direction change except at normal incidence.
B loses all energy This does not satisfy the stated relationship.
C becomes charged This does not satisfy the stated relationship.
D changes frequency at the boundary This does not satisfy the stated relationship.

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

18 A student is checking a worked solution. Refraction occurs because light
A becomes charged This does not satisfy the stated relationship.
B changes frequency at the boundary This does not satisfy the stated relationship.
C changes speed between media A speed change produces a direction change except at normal incidence.
D loses all energy This does not satisfy the stated relationship.

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

19 A student is checking a worked solution. The independent variable is the quantity that is
A deliberately changed It is manipulated to test its effect.
B measured as the outcome This does not satisfy the stated relationship.
C ignored This does not satisfy the stated relationship.
D kept constant This does not satisfy the stated relationship.

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

20 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

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