That y8 kid 🤣 - bot · guest · Physics

01 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

02 Which response best completes this VCE-style item? 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 amplitude This does not satisfy the stated relationship.

D source The source sets the oscillation frequency.

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

03 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 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? A device receives 100 J and delivers 75 J usefully. Its efficiency is

A 100% This does not satisfy the stated relationship.

B 75% Useful output divided by input is 0.75.

C 25% This does not satisfy the stated relationship.

D 133% This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Efficiency · 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 A student is checking a worked solution. In an isolated collision, total

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

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

08 Which response best completes this VCE-style item? The area under a velocity–time graph gives

A force This does not satisfy the stated relationship.

B acceleration This does not satisfy the stated relationship.

C power This does not satisfy the stated relationship.

D displacement Integrating velocity over time gives displacement.

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

09 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

10 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

11 An alpha particle contains

A two photons This does not satisfy the stated relationship.

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

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

12 A student is checking a worked solution. Temperature is most directly related to the particles’ average

A rest mass This does not satisfy the stated relationship.

B electric charge This does not satisfy the stated relationship.

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

D translational kinetic energy Temperature tracks average random translational kinetic energy.

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

13 A student is checking a worked solution. The gradient of a displacement–time graph gives

A momentum This does not satisfy the stated relationship.

B force This does not satisfy the stated relationship.

C velocity Velocity is the rate of change of displacement.

D acceleration This does not satisfy the stated relationship.

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

14 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

15 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

16 During a one-minute revision round: 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 100 ms

17 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

18 A student is checking a worked solution. Increasing sound amplitude most directly increases

A frequency This does not satisfy the stated relationship.

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

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

D wave speed in the same medium This does not satisfy the stated relationship.

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

19 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

20 After three half-lives, the undecayed fraction is

A \(1/6\) This does not satisfy the stated relationship.

B \(1/3\) 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