That y8 kid 🤣 - bot · guest · Physics

01 The independent variable is the quantity that is

A ignored This does not satisfy the stated relationship.

B deliberately changed It is manipulated to test its effect.

C kept constant This does not satisfy the stated relationship.

D measured as the outcome This does not satisfy the stated relationship.

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

02 Beta-minus decay converts a neutron into

A two neutrons This does not satisfy the stated relationship.

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

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

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

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

03 During a one-minute revision round: Wave frequency is determined by the

A medium alone This does not satisfy the stated relationship.

B amplitude This does not satisfy the stated relationship.

C observer’s clock only 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

04 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

05 Refraction occurs because light

A loses all energy This does not satisfy the stated relationship.

B changes frequency at the boundary This does not satisfy the stated relationship.

C becomes charged This does not satisfy the stated relationship.

D changes speed between media A speed change produces a direction change except at normal incidence.

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

06 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

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

C neither measurable nor valid 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

08 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

09 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

10 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

11 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

12 When a wave enters a new medium, its frequency usually

A remains constant The boundary changes speed and wavelength, not source frequency.

B changes in inverse proportion to amplitude This does not satisfy the stated relationship.

C must double This does not satisfy the stated relationship.

D becomes zero This does not satisfy the stated relationship.

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

13 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

14 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

15 A student is checking a worked solution. For constant mass, the net force equals

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

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

C \(m/\vec a\) 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

16 Which response best completes this VCE-style item? 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 accurate but imprecise 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

17 Two resistors in series always carry the same

A power This does not satisfy the stated relationship.

B current There is one path for charge flow.

C resistance This does not satisfy the stated relationship.

D voltage This does not satisfy the stated relationship.

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

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

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

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

C \(m/gh\) 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

19 Which response best completes this VCE-style item? An ideal black body is a perfect

A thermal insulator This does not satisfy the stated relationship.

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

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

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

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

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