Free Printable AS Physics Unit 3/4 Massive MC

Worksheets

AS Physics Unit 3/4 Massive MC

Total questions: 257

Worksheet time: 64hrs 15mins

Name

Class

Date

Which of the following best describes Max Planck's contribution to the development of quantum physics?

Max Planck combined the quantised wave and particle models of light.

Max Planck analysed the photoelectric effect and described light as quantised energy packets.

Max Planck explained that black body radiation and the photoelectric effect using quantised energy

Max Planck hypothesised that the radiation emitted and absorbed by the walls of a black body cavity is quantised

A charged particle, q, enters a uniform magnetic field B at velocity v. The particle follows a circular path of radius r as shown. If the magnitude of the field were doubled and the other variables were kept constant, determine the new radius.

r/4

r/2

Calculate the energy of a photon with wavelength of 1000 nm.

1.99 x 10^-19 J

3.00 x 10^14 Hz

6.626 x 10^-34 J

0 J

Calculate the wavelength of a photon which is emitted when an electron in a hydrogen atom moves from energy level n = 4 to n = 2.

2.057 x 10^6 m

4.86 x 10^-7 m

3.22 x 10^6 m

6.34 x 10^-7 m

Calculate the velocity of an electron that has a wavelength of 3.33 x 10^-10 m

2184182 m/s

35678666 m/3

0.2184141987 m/s

0.3567866 m/s

Calculate the energy of a photon with wavelength 580 nm.

3.43 x 10^-19 J

3.43 x 10 ^-28 J

3.85 x 10^-31 J

3.85 x 10^-40 J

A student set up an experiment to determine the resistance of a wire, called Wire X. The graph and trend line for the potential difference (V) and the current (A) is shown. Calculate the resistance of Wire X.

2.7 Ohms

0.37 Ohms

8.1 Ohms

3 Ohms

In the graph shown, one data point was considered inconsistent and was disregarded when drawing the trend line for calculating its resistance. Suggest a physical reason why this data point is inconsistent with the trend line.

Human error

Meter malfunction

The wire was heated from being in the circuit

Random error

An experiment was conducted in which light of different frequencies was shone onto the surface of four different metals. Electrons were found to be emitted and their kinetic energies were measured. The graph shows the results.

Each of the graphs have the same gradient. Identify the significance of the observation.

The gradient is the work function

The gradient is the kinetic energy

The gradient is Planck's constant

The gradient is insignificant

10.

When electromagnetic radiation shines on metals, photoelectrons may be emitted. The

maximum kinetic energy of emitted photoelectrons is plotted against radiation frequency

for four metals as shown in the graph.

Electromagnetic radiation of wavelength 187 nm shines upon an unknown metal and the

maximum kinetic energy of the photoelectrons is found to be 2.5 eV.

Based on this information, determine the unknown metal.

11.

Identify which graph is consistent with predictions resulting from Planck’s hypothesis regarding radiation from hot objects.

12.

The diagram shows a current-carrying conductor in a magnetic field. Calculate the magnitude of the force on the conductor.

0 N

0.05 N

0.09 N

0.10 N

13.

The diagram shows an electric circuit in a magnetic field directed into the page. The graph shows how the flux through the conductive loop changes over a period of

12 seconds.

Calculate the maximum magnetic field strength within the stationary loop during the 12-second interval.

0 T

1.2 T

2.1 T

4.41 T

14.

A photon is emitted when an electron in a hydrogen atom transitions from n = 3 excited state to the ground state.

Calculate the wavelength of the photon.

102.7 nm

740 nm

449.7 nm

500 nm

15.

Two charged plates are initially separated by a distance as shown in the diagram.

The potential difference between the two plates remains constant.

Identify which graph best represents the change in electric field strength as the distance between the two plates is increased.

16.

P, Q and R are straight current-carrying conductors.

Conductors P and R are fixed and unable to move. Conductor Q is free to move.

Determine the direction that conductor Q will move as a result of the current flow in P and R.

Left

Right

Into the page

Out of the page

17.

Calculate the magnitude of the of the force experienced by Q as a result of currents through P and R.

4.8 x 10^-4 N

3.2 x 10^-4 N

9.6 x 10^-4 N

8.0 x 10^-4 N

18.

The diagram represents the electric field around a negative charge.

If the magnitude of the charge were doubled, identify the diagram that best represents the new electric field.

19.

Which law best applies to the operation of an electrical transformer?

Conservation of Mass

Conservation of Energy

Conservation of Charge

Conservation of Momentum

20.

Why is a high voltage used to transmit electric energy from power stations to users?

It helps to protect the system from lightening strikes

It allows for the supporting structures to have smaller insulators.

It minimises the effects of the electrical resistance of the wires.

It ensures that, even with the voltage losses, 240 V will still reach the user.

21.

A circuit with two resistors is shown below. Determine the equivalent resistance of the circuit

6 Ohms

3 Ohm

1.3 Ohms

8 Ohms

22.

A circuit with three resistors is shown below. Determine the equivalent resistance of the circuit.

1.1 Ohms

4 Ohms

48 Ohms

12 Ohms

23.

Two identical charges of 1.6 micro Coulumbs are separated by a distance of 190 mm. Determine the magnitude of force (F) acting between them.

1.0 N

0 N

0.64 N

1.5 N

24.

Select the correct circuit diagram for an ammeter.

25.

A 200 g metal object was heated from 40 °C to 80 °C using 1000 J of heat. Calculate the specific heat capacity of the metal.

100 Jkg^-1K^-1

0.125 Jkg^-1K^-1

125 Jkg^-1K^-1

5000 Jkg^-1K^-1

26.

Determine the value of 282 degrees Kelvin, in Celsius

-9

555

-555

27.

The diagram shows an energy level diagram for the hydrogen atom. Determine the energy of a photon emitted when an electron transitions from n = 3 to n = 1 in a hydrogen atom.

1.93 x 10^-18 J

19.3 x 10^-18 J

1.03 x 10^-18 eV

19.3 x 10^-18 eV

28.

A clarinet is a wind instrument that can be modelled as a tube closed at one end. Assume that the pressure nodes and anti-nodes occur exactly at the end of the tube. The clarinet has a fundamental frequency of 130 Hz. Calculate the length (L) of a tube that models the clarinet. The speed of sound in air is 340 m/s.

0.654 m

654 m

1.3 m

130 m

29.

Identify which of the following transitions (A-D) as indicated on the energy level diagram, represents a change in atomic energy levels for the emission of a photon of energy 1.65 eV?

30.

Determine the temperature in °C that would produce radiation with a peak wavelength of 1.0 μm.

2898 degrees Celsius

2625 degrees Celsius

250 degrees Celsius

500 degrees Celsius

31.

A current-carrying wire is placed perpendicular to a magnetic field. Determine the graph that shows the correct relationship between magnetic field strength (B) and current (I) if the force is to remain constant.

32.

A galvanometer is an electromechanical instrument used for detecting and indicating an electric current. A greater deflection occurs in response to a greater current flowing through a coil in a constant magnetic field.

The diagram shows an ideal transformer. When the switch is closed, the pointer on the galvanometer deflects. How could the size of the deflection be increased?

Decrease the number of primary coils

Decrease the number of secondary coils

Replace the iron core with a copper core

Place a resistor in series with the galvanometer

33.

The diagram represents a simple DC motor. A current of 1.0 A flows through a square loop ABCD with 5 cm sides in a magnetic field of 0.01 T.

Determine the force acting on section AB due to the magnetic field, when the loop is in the position shown.

5 x 10^-4 N

5000 N

50 N

0.005 N

34.

The diagram shows a magnet moving upward into a coil. Which row of the table correctly identifies the direction of the induced coil as viewed from the top, and the direction of the magnetic field inside the coil.

Anticlockwise, downwards

Anticlockwise, upwards

Clockwise, upwards

Clockwise, downwards

35.

Why is an iron core used in a transformer?

To limit eddy currents

To reduce the heat generated

To separate the magnetic fields

To increase the linkage of the flux

36.

The diagram shows two experiments, in Experiment 1, the magnet is moved away from the coil. In experiment 2, the coil is moved away from the magnet.

Why is the same electromotive force (emf) produced in both experiments?

Energy is conserved.

The motor effect generates the same force.

The relative motion between the coil and the magnet is the same.

Both the direction of the magnetic field and the direction of the motion change.

37.

The diagram shows a generator circuit connected with a switch. The generator is rotated by one revolution in the first second with the switch open. It is then rotated by one revolution in the next second with the switch closed.

Identify the graph which shows the current produced by this generator for these two seconds.

38.

Two charges have a Coulumb's force of 12 N between them. If the distance between the masses is doubled, what would be the new electrostatic force between them?

3 N

6 N

12 N

24 N

39.

The diagram shows an alpha particle and a proton, placed at equal distances from two large charged metal plates. Determine the answer that best describes the motion of the particles.

Both particles move with the same acceleration.

The alpha particle moves with half the acceleration of the proton.

The alpha particles moves with twice the acceleration of the proton.

The alpha particle moves with a quarter of the acceleration of the proton.

40.

Calculate the energy of a photon of wavelength 415 nm.

415 J

4.79 x 10^-19 J

200 J

4.5 x 10^-18 J

41.

Students doing a Physics practical investigation use a step-down transformer with 240 V AC to

12 V AC. Determine the ratio of the number of turns on the primary to secondary coil.

1 : 4

1 : 20

4 : 1

20 : 1

42.

The correct definition of a period is:

the amount of time one cycle or one event takes to occur

the amount of time half of one cycle or event takes to occur

the distance travelled by an object in uniform circular motion

the distance travelled by a wave when one whole wavelength passes a given point

43.

According to one model of the atom, the electron in the ground state of a hydrogen atom moves around the stationary proton in a circular orbit with a radius of 53 pm (53 × 10^–12 m).

Determine the magnitude of the force acting between the proton and the electron at this separation

distance. The magnitude of the electron and proton charges is 1.6 × 10^–19 C.

Provide your answer in scientific notation including units of measurement.

8.2 x 10^-8 C

8.255 x 10^-8 N

8.2 x 10^-8 N

8 x 10^-8 N

44.

The diagram shows a schematic diagram of a simple DC motor.

It consists of two magnets, a single 9.0 V DC power supply, a split-ring commutator and a rectangular coil of wire consisting of 10 loops. The total resistance of the coil of wire is 6.0 Ω. The length of the side JK is 12 cm and the length of the side KL is 6.0 cm. The strength of the uniform magnetic field is 0.50 T.

Determine the size and the direction (A–F) of the force acting on the side JK.

0.9 N, down

0.9 N, up

0 N

0.5 T

45.

The alternator has a rectangular coil with sides of 0.30 m × 0.40 m and 10 turns. The coil rotates four times a second in a uniform magnetic field. The magnetic flux through the coil in the position shown is 0.20 Wb.

Calculate the magnitude of the magnetic field. Include appropriate units of measurement.

1.7 T

0.2 Wb m^-2

0 T

1.7 Wb

46.

A light ray from a laser passes from a glucose solution (n = 1.44) into the air (n = 1.00), as shown in the diagram. Calculate the critical angle (total internal reflection) from the glucose solution to the air.

0.025

0.017

47.

A Physics teacher intends to demonstrate wave phenomena to her students. She takes her students to the school oval to listen to a 680 Hz sound. The speed of sound in air is 340 m s^-1. Calculate the wavelength of the sound.

100 nm

0.5 m

2 m

340 m

48.

Standing waves are formed on a string of length 4.0 m that is fixed at both ends. The speed of the waves is 240 ms^–1. Calculate the wavelength of the lowest frequency resonance.

0.5 m

4 m

2 m

8 m

49.

Standing waves are formed on a string of length 4.0 m that is fixed at both ends. The speed of the waves is 240 ms^–1. Calculate the frequency of the second-lowest frequency resonance

It doesn't create a frequency

60 Hz

8 Hz

240 Hz

50.

The correct definition of Coulomb’s law is:

the total electric charge of an isolated system remains constant regardless of changes within the system

the direction of an induced electric current always opposes the change in the circuit or the magnetic field that produces it

when the magnetic flux linking a circuit changes, an electromotive force (EMF) is induced in the circuit proportional to the rate of change of the flux linkage.

like electric charges repel and opposite electric charges attract, with a force proportional to the product of the electric charges and inversely proportional to the square of the distance between them.

51.

Identify which of the following correctly shows the electric field between two parallel, charged plates.

52.

A laser emits light of wavelength 550 nm. Calculate the frequency of this light.

0 Hz

5.45 x 10^14 Hz

5.45 x 10^14 N

550 Hz

53.

Some mobile phones are recharged at a power point using a charger that contains a transformer. Identify the the purpose of the transformer.

To convert AC to DC at the power point

To convert DC to AC at the power point

To increase the AC voltage at the power point

To decrease the AC voltage at the power point

54.

The definition of interference is a phenomenon in which waves

overlap in space

change direction and speed

return in to the same medium

superimpose to form a resultant wave

55.

A magnet passes through a copper tube at constant velocity along the path shown. A current is induced in the tube by the motion of the magnet.

Describe the forces acting between the tube and the magnet at points P and Q.

P: Attraction; Q: Repulsion

P: Repulsion; Q: Attraction

P: Attraction; Q: Attraction

P: Repulsion; Q: Repulsion

56.

The diagram shows a label on a transformer used in an appliance.

Explain why the information provided on the label is not correct. Support your answer with calculations.

The power in is not consistent with household electricity supply

This is not consistent with law of conservation of energy as there is more energy in then out

The units are incorrect

The output should be in DC

57.

The diagram represents a simple DC motor. A current of 1.0 A flows through a square loop ABCD with 5 cm sides in a magnetic field of 0.01 T.

Determine the force acting on section AB, when the loop is in the position shown.

5 x 10^-4 N into page

5 x 10^-4 N out of page

0 N

5 x 10^-4 N right

58.

The following diagram shows a ray of light, travelling in a vacuum, incident on a glass object. Calculate the velocity of the refracted light in the glass.

1.5 x 10^8 m/s

2.2 x 10^8 m/s

3 x10^8 m/s

1.96 x 10^8 m/s

59.

What is Young's Double Slit Experiment?

An experiment that developed understanding of the structure of the atom

A demonstration that light and matter can display characteristics of both classically defined waves and particles

A demonstration that relates frequency of sound to wavelength in a pipe

An example of convection, conduction and radiation

60.

An experiment was conducted to calculate the resistance of a resistor, R. The graph below shows the resultant current passing through the resistor when a potential difference was applied across it. Calculate the resistance of the resistor.

0.21 Ohms

4.8 Ohms

2.1 Ohms

0.4 Ohms

61.

A 200 g metal cube with a specific heat capacity of 900 J kg –1 K–1 is placed in a 500 g water bath. The following graph shows the temperature of the water with respect to time.

Calculate the initial temperature of the metal cube, assuming that there is no heat loss

297

255

62.

A student must choose between the two closed ended pipes shown. The standing wave formed in each pipe travels at the speed of sound. Determine which pipe will produce a note with a frequency of 265 Hz.

Neither

Both

63.

A 250 g sample of lead at an initial temperature of 275 °C is dropped into a bucket containing 1.5 kg of water at an initial temperature of 25 °C. The thermodynamic properties of lead are presented in this table.

Calculate the temperature at which the lead and water come to thermal equilibrium, assuming no thermal energy is lost from the system.

200

26.3

150

64.

When measured in °C, what temperature is 296 K?

-23

569

65.

In the equation 𝐸k=ℎ𝑓−𝑊, the physical quantity represented by 𝑊 is the

maximum kinetic energy of an ejected photoelectron

wavelength of a photon required to eject a photoelectron

minimum energy required to remove an electron from a solid

minimum energy required to ionise an electron from a single atom

66.

Heat transfer by radiation is described as heat transfer

by electromagnetic waves

by moving subatomic particles

directly through a solid material

through a fluid influenced by gravity

67.

The diagram shows an electric current-carrying wire. Calculate the magnitude of the magnetic field at point Y.

4 x 10^-8 T

4 x 10^-6 T

4 T

40 T

68.

A 100 g metal object was heated from 40 °C to 90 °C using 1000 J of heat. Calculate the specific heat capacity of the metal.

0.2 J kg^-1 K^-1

200 J kg^-1 K^-1

500 J kg^-1 K^-1

5000 J kg^-1 K^-1

69.

A mechanical system has an input of 200 kW of power. Which of the following options is a realistic scenario for its output?

70.

The quantity defined as the rate at which work is done or the rate at which energy is transferred or transformed is:

Power

Current

Resistance

Potential Difference

71.

Select the circuit diagram symbol for a light bulb.

72.

Determine the direction of the magnetic field inside the solenoid at point X.

into page

out of page

left to right

right to left

73.

Select the correct definition of electromagnetic radiation.

Emissions of energy as electromagnetic waves or moving subatomic particles, especially high-energy particles, that cause ionisation

The production of an electromotive force or voltage across an electrical conductor due to its dynamic interaction with a magnetic field

Radiant energy consisting of synchronised oscillations of electric and magnetic fields, or electromagnetic waves, propagated at the speed of light in a vacuum

The process by which heat or electricity is directly transferred or transmitted through the material of a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material

74.

The diagram below shows two charges (𝑞1 and 𝑞2), separated by a distance (𝑑). Calculate the magnitude of the force (𝐹) acting between the two charges.

1.0 N

1.0 x 10^6 N

1.0 x 10^-6 N

15 x 10^-4 N

75.

Which of the diagrams below is the correct representation of the magnetic field around an electric current-carrying wire?

76.

Substance A has a lower specific heat than Substance B. With all other factors equal, identify which substance will require the most energy to heat equal masses of A and B to the same temperature.

Substance A

Substance B

Both require the same amount of energy

The answer depends on the density of each substance

77.

Describe what you can expect to observe anytime there is a difference in temperature between two points

Cold movement towards the warmer point

Thermal energy flowing from cold to warm regions

Thermal energy flowing from warm to cold regions

No energy movement unless the temperature difference is high enough

78.

Recall the definition of latent heat of fusion

The energy required to heat 1kg of a solid to melting point

The energy required to melt 1kg of a solid to melting point

The energy required to heat 1 kg of a liquid to boiling point

The energy required to evaporate 1kg of a liquid at boiling

79.

If 48 000 J of heat energy is released when a 2kg block of metal cools by 12 degrees, calculate the specific heat of the metal

1152000

0.0005

2000

8000

80.

Calculate the energy required to melt 750g of ice at 0 degrees. (Latent Heat of Fusion for Water= 334 kJ kg^-1)

250.5 kJ

250500 kJ

25.05 kJ

250500000 kJ

81.

Calculate the equilibrium temperature when a 100g piece of iron at 150 degrees is added to 200mL of water at 20 degrees.

(Specific heat capacity of water= 4200 J kg^-1 K^-1)

(Specific heat capacity of iron= 450 J kg^-1 K^-1)

90 degrees

840 degrees

26.6 degrees

14 degrees

82.

What is the name of the law that states that charge is conserved at all points in an electrical circuit?

Ohm's Law

Kirchoff's Voltage Law

Kirchoff's Current Law

The Law of Conservation of Energy

83.

recall the definition of resistance

The ratio of the electric current flowing through, to the voltage applied, an object

The voltage applied multipled by the electric current through an object

The measure of the resisting property of a specified material to the flow fo the electric current

The ratio of the voltage applied to, to the the electric current flowing through, an object

84.

Calculate the current passing through an 8 Ohm resistor when a potential of 4V is applied across its terminal

0.5 A

1 A

2 A

32 A

85.

Calculate the equivalent resistance of a 10 Ohm, 20 Ohm and 30 Ohm resistor in parallel

3 Ohm

5.5 Ohm

20 Ohm

60 Ohm

86.

Calculate the emf of a power supply if it causes 0.4A in a circuit that consists of a 10 Ohm and 30 Ohm resistor in series

16V

18.75V

100V

87.

A split system air conditioner in a typical Australian house operates on a 240V circuit and draws about 20A of current. Calculate the power rating of the air conditioner.

12 W

0.083 W

12 P

4800 W

88.

Identify which of the following waves is not a mechanical wave.

Light

Water

Sound

Seismic

89.

Identify which of the following measurements remains constant when a wave crosses the boundary from one medium to another.

Amplitude

Frequency

Velocity

Wavelength

90.

A wave travels along a string towards a fixed boundary. Describe the properties of the reflected wave.

Lower frequency and smaller amplitude

Smaller amplitude, inverted and same frequency

Higher frequency, smaller wavelength and the same velocity

Smaller amplitude, non inverted and the same frequency

91.

Polarised light waves are best described as

light waves that are longitudinal instead of transverse

light waves in which the electric field and magnetic field are perpendicular to each other

light waves in which the direction of field vibrations cannot be determined

light waves in which the vibrations occur in a single plane

92.

Calculate the speed of light in water, n=1.33

2.26 x 10 ^8 m/s

3.00 x 10^8 m/s

4.00 x 10^8 m/s

4.31 x 10*8 m/s

93.

A ray of light in air is approaching the boundary with water at an angle of 52 degrees. Determine the angle of refraction of the light rays. The index of refraction for water is n=1.33

52 degrees

36.3 degrees

38 degrees

0.5925 degrees

94.

Calculate the total resistance of the whole circuit

2.25 Ohms

8.25 Ohms

18 Ohms

144 Ohms

95.

Determine how many seconds it would take a kettle with a power rating of 1800 W to produce 36 000 J

0.05 sec

20 sec

20 hours

64800000 sec

96.

Which is the best statement of the arrangement shown?

2 Ω, 4 Ω and 6 Ω are in series

2 Ω and 4 Ω are in series and the combination is in parallel with 6 Ω

2 Ω, 4 Ω and 6 Ω are in parallel

2 Ω and 4 Ω are in parallel and 6 Ω is in series

97.

The circuit symbol, B, is a

battery

cell

gap in the circuit

resistor

98.

The circuit symbol, A, is a

cell

battery

rheostat

open switch

99.

Calculate the amplitude in cm.

80 cm

60 cm

30 cm

Can't be determined by the graph

100.

The speed of light is 3.0 × 10^8 m/s. If the wavelength of red light is 5.0 × 10^-7 m, calculate its frequency.

6.0 x 10^14 Hz

1.66 x 10^-15 Hz

150 Hz

3 x 10^8 Hz

101.

A heavy spring and a light spring are joined together as shown in the figure. A pulse is generated at the end of one spring and travels along towards the boundary. At the boundary, some of the energy is transmitted and some reflected.

Which one of the diagrams below shows the position and orientation of the pulse shortly afterwards?

102.

Calculate the refractive index of the material shown.

0.45

0.577

1.44

1.81

103.

A small 2.0 cm high candle is placed 50 cm in front of a 20 cm focal length convex lens. Sketch a ray diagram to find the location of the image.

34 cm behind

34 cm in front

50 cm behinf

There is no image

104.

An object 4.0 cm high is located 15 cm in front of a plane mirror. Which one of the following best describes the characteristics and the location of the image?

virtual, 4 cm high, upright, 15 cm behind the mirror

virtual, 4 cm high, inverted, 15 cm behind the mirror

real, 4 cm high, upright, 15 cm behind the mirror

real, < 4 cm high, upright, <15 cm behind the mirror

105.

The refractive indices of flint glass and turpentine are 1.65 and 1.5 respectively. If the angle of incidence in the turpentine is 49°, calculate the angle of refraction in the flint glass.

0.686

2.33

43.3

55.03

106.

Determine the value of the refracted angle when the incident ray of light is at the critical angle.

360 degrees

0 degrees

90 degrees

180 degrees

107.

Standing waves are produced by the superposition of two waves with