WorksheetsVCE Physics 2020
Total questions: 20
Worksheet time: 20mins
The best description of the two charges is that the
charges are both positive.
charges are both negative.
charges can be either both positive or both negative.
left-hand charge is positive and the right-hand charge is negative.
Jupiter’s moon Ganymede is its largest satellite. Ganymede has a mass of 1.5 × 1023 kg and a radius of 2.6 × 106 m. Which one of the following is closest to the magnitude of Ganymede’s surface gravity?
0.8 m s−2
1.5 m s−2
3.8 m s−2
9.8 m s-2
Which one of the following best gives the speed of the positron as it exits the magnetic field?
0 m/s
much less than 1.4 × 106 m/s
1.4 × 106 m/s
greater than 1.4 × 106 m/s
The speed of the positron is changed to 7.0 × 105 m/s. Which one of the following best gives the value of the radius r for this speed?
r/4
r/2
r
2r
A coil consisting of 20 loops with an area of 10cm2 is placed in a uniform magnetic field of strength 0.03T so that the plane of the coil is perpendicular to the field direction. The magnetic flux through the coil is closest to
0 Wb
3.0 × 10−5 Wb
6.0 × 10−4 Wb
3.0 × 10−1 Wb
A single loop of wire moves into a uniform magnetic field B of strength 3.5x10-4 T over time t = 0.20 s from point X to point Y. The area of the loop is 0.05 m2 The magnitude of the average induced EMF in the loop is closest to
0 V
3.5 × 10−6 V
8.8 × 10−5 V
8.8 × 103 V
An ideal transformer has an input DC voltage of 240 V, 2000 turns in the primary coil and 80 turns in the secondary coil. The output voltage is closest to
0 V
9.6 V
6.0 × 103 V
3.8 × 107 V
The arrows in option E below, indicate the direction and the size of the forces acting on the ball (A. to D). Ignoring air resistance, which one of the following (A-D) best represents the forces acting on the ball when it is at the bottom of the circular path and moving to the left?
A
B
C
D
Options
Two blocks of mass 5 kg and 10 kg are in contact on a frictionless surface. The force F is applied tot he 5kg block as shown. Which one of the following statements is correct?
The net force on each block is the same.
The acceleration experienced by the 5 kg block is twice the acceleration experienced by the 10 kg block.
The magnitude of the net force on the 5 kg block is half the magnitude of the net force on the 10 kg block.
The magnitude of the net force on the 5 kg block is twice the magnitude of the net force on the 10 kg block.
If the force F has a magnitude of 250 N, what is the work done by the force in moving the blocks in a straight line for a distance of 20 m?
5 kJ
25 kJ
50 kJ
500 kJ
Which one of the following statements concerning the momentum and the kinetic energy of the ISS is correct?
Both the momentum and the kinetic energy vary along the orbital path.
Both the momentum and the kinetic energy are constant along the orbital path.
The momentum is constant, but the kinetic energy changes throughout the orbital path.
The momentum changes, but the kinetic energy remains constant throughout the orbital path.
A high-energy proton is travelling through space at a constant velocity of 2.50 × 108 m/s. The Lorentz factor, γ, for this proton would be closest to
1.81
2.44
3.27
3.39
Matter is converted to energy by nuclear fusion in stars. If the star Alpha Centauri converts mass to energy at the rate of 6.6 × 109 kg s−1, then the power generated is closest to
2.0 x1018 W
2.0 × 1018 J
6.0 × 1026 W
6.0 × 1026 J
Students are investigating the diffraction of waves using a ripple tank. Water waves are directed towards barriers with gaps of different sizes, as shown below. In which one of the following would the greatest diffraction effects be observed?
A
B
C
D
The energy of a light wave increases with increasing amplitude. II The energy of a light wave increases with increasing frequency. III The energy of a light wave increases with decreasing wavelength. Which of the statements above about the energy of light waves is correct?
III only
I and II only
I and III only
all of the statements are correct
Which one of the following correctly ranks these metals in terms of their work function, from highest to lowest in numerical value?
sodium, potassium, lithium, nickel
nickel, potassium, sodium, lithium
potassium, nickel, lithium, sodium
lithium, sodium, potassium, nickel
Which transition results in the emission of a photon with the most energy?
A
B
C
D
Quantised energy levels within atoms can best be explained by
electrons behaving as individual particles with different energies.
electrons behaving as waves, with each energy level representing a diffraction pattern.
protons behaving as waves, with only standing waves at particular wavelengths allowed.
electrons behaving as waves, with only standing waves at particular wavelengths allowed.
Which one of the following best describes a hypothesis?
a testable scientific explanation
a well-tested scientific explanation
a scientific explanation by a famous scientist
a widely believed and highly plausible explanation
When photons with energy E strike a metal surface, electrons may be emitted. The maximum kinetic energy, Ek max, of the emitted electrons is given by Ek max = E – W, where W is the work function of the metal. Which one of the following graphs best shows the relationship between the maximum kinetic energy of these electrons, Ek max, and the wavelength of the photons, λ?
A
B
C
D
