WorksheetsVCE Physics 2021
Total questions: 20
Worksheet time: 10mins
The aim of darts is to hit the bullseye at the centre of a dartboard. Four darts players (A, B, C and D) each threw three darts. The results of their throws are shown below. Which one of the players produced a set of attempts that could be described as being precise but inaccurate?
Player A
Player B
Player C
Player D
The diagram below shows the electric field lines between four charged spheres: P, Q, R and S. The magnitude of the charge on each sphere is the same. Which of the following correctly identifies the type of charge that resides on each of the spheres P, Q, R and S?
+ positive
- negative
+ positive
- negative
The diagram in E below shows two parallel metal plates with opposite charges on each plate. X, Y and Z represent different distances from the positive plate. Which one of the following graphs best shows the electric field strength, E, versus the position, X, between the two parallel plates?
A
B
C
D
Parallel plates
The planet Phobetor has a mass four times that of Earth. Acceleration due to gravity on the surface of Phobetor is 18m/s2. If Earth has a radius R, which one of the following is closest to the radius of Phobetor?
R
1.5R
2R
4R
The diagram below shows a small DC electric motor, powered by a battery that is connected via a split-ring commutator. The rectangular coil has sides KJ and LM. The magnetic field between the poles of the magnet is uniform and constant. The switch is now closed, and the coil is stationary and in the position shown in the diagram. Which one of the following statements best describes the motion of the coil when the switch is closed?
The coil will remain stationary.
The coil will rotate in direction A, as shown in the diagram.
The coil will rotate in direction B, as shown in the diagram.
The coil will oscillate regularly between directions A and B, as shown in the diagram.
A magnet approaches a coil with six turns, as shown in the diagram below. During time interval Δt, the magnetic flux changes by 0.05 Wb and the average induced EMF is 1.2 V.
0.04s
0.01s
0.25s
0.50s
A mobile phone charger uses a step-down transformer to transform 240 V AC mains voltage to 5.0 V. The mobile phone draws a current of 3.0 A while charging. Assume that the transformer is ideal and that all readings are RMS.
48 A
16 A
1.2 A
0.06 A
The diagram below shows a simple electrical generator consisting of a rotating wire loop in a magnetic field, connected to an external circuit with a light globe, a split-ring commutator and brushes. The direction of rotation is shown by the arrow. Which one of the following best describes the function of the split-ring commutator in the external circuit?
It delivers a DC current to the light globe.
It delivers an AC current to the light globe.
It ensures the force on the side of the loop nearest the north pole is always up.
It ensures the force on the side of the loop nearest the north pole is always down
Lucy is running horizontally at a speed of 6 m/ along a diving platform that is 8.0 m vertically above the water. Lucy runs off the end of the diving platform and reaches the water below after time t. She lands feet first at a horizontal distance d from the end of the diving platform. Which one of the following expressions correctly gives the distance d?
0.8t
6t
0.5t2
6t+5t2
Which one of the following is closest to the time taken, t, for Lucy to reach the water below?
0.8s
1.1s
1.3s
1.6s
Which one of the following is closest to the spring constant of the spring?
0.16 N/m
1.0x102 N/m
1.6x105 N/m
1.0x105 N/m
Which one of the following is closest to the potential energy stored in the spring?
0.04 J
0.20 J
20 J
40 J
The wave propagates with a speed of 18 m/s. Which of the following is closest to the amplitude and frequency of the wave?
8 cm, 3.0 Hz
16 cm, 3.0 Hz
8 cm, 300 Hz
16 cm, 300 Hz
Different regions of the electromagnetic spectrum have distinct applications in society. Which of the following best associates a particular region of the electromagnetic spectrum with a possible application?
A
B
C
D
A Physics class is investigating the dispersion of white light using a triangular glass prism. Which one of the following diagrams best shows the principle of dispersion?
A
B
C
D
Which one of the following is essential to the measurement of the maximum kinetic energy of the emitted photoelectrons?
the level of brightness of the light source
the wavelengths that pass through the filter
the reading on the voltmeter when the current is at a minimum value
the reading on the ammeter when the voltage is at a maximum value
Which one of the following is closest to the de Broglie wavelength of a 663 kg motor car moving at 10 m/s?
10−37 m
10−36 m
10−35 m
10−34 m
A monochromatic light source is emitting green light with a wavelength of 550 nm. The light source emits 2.8 × 1016 photons every second.
Which one of the following is closest to the power of the light source?
1.0 × 10−2 W
3.3 × 10−11 W
6.3 × 1016 W
6.3 × 1016 W
Which one of the following values of n, the number of whole wavelengths, best depicts the de Broglie standing wave pattern shown in the diagram?
2
3
4
6
One of Einstein’s postulates for special relativity is that the laws of physics are the same in all inertial frames of reference. Which one of the following best describes a property of an inertial frame of reference?
It is travelling at a constant speed.
It is travelling at a speed much slower than c.
Its movement is consistent with the expansion of the universe.
No observer in the frame can detect any acceleration of the frame.
