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Year 12 Final Lesson Physics

Total questions: 101

Worksheet time: 2hrs 6mins

Name
Class
Date
1.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
2.

At what point is vy= 0 m/s?

a)

A

b)

B

c)

C

d)

D

e)

None of these points

3.

At what point is vx= 0 m/s?

a)

A

b)

B

c)

C

d)

D

e)

None of these points

4.

Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?

a)
b)
c)
d)
5.

Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground first?

a)

A

b)

B

c)

Both at the same time

6.
A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65 m/s. Assume no air resistance. How long until the ball reaches the ground?
a)
0.45 s
b)
0.67 s
c)
0.22 s
d)
0.47 s
7.
A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. What is the vertical component of the cannonball’s velocity? What is the horizontal component of the cannonball’s velocity?
a)
-625 m/s; 625 m/s
b)
441.9 m/s; 441.9 m/s
c)
-441.9 m/s; 441.9 m/s
d)
0 m/s; 625 m/s
8.
A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. How high did the cannonball travel?
a)
9963 m
b)
39,771 m
c)
7.22 m
d)
17183.25 m
9.

How does the gravitational force the Earth exerts on the sun compare to the gravitational force the sun exerts on the Earth?

a)

The gravitational force the sun exerts on the Earth is larger

b)

The gravitational force the Earth exerts on the sun is larger

c)

Their gravitational forces are equal

d)

There is not enough information

10.

As two objects get closer together, what happens to the force of gravity between them?

a)

The force of gravity increases

b)

The force of gravity decreases

c)

The force of gravity stays the same, since their masses are constant

d)

Not enough information

11.

A yo-yo is whirled on a string, then the string breaks. What causes the yo-yo to move off in a straight line?

a)

centrifugal force

b)

centripetal force

c)

inertia

d)

centripetal acceleration

12.

Bruno the bat has a mass of 0.58 kg and flies at a speed of 0.8 m/s in circle of radius 0.5 m. What is his acceleration?

a)

0.25 m/s2

b)

1.3 m/s2

c)

1.6 m/s2

d)

0.74 m/s2

13.
What is the direction of the acceleration at point B, if the ball is revolving clockwise?
a)
up
b)
right
c)
down
d)
left
14.
The velocity is always _____ to the line of a circle. 
a)
outwards
b)
towards the center
c)
tangent
d)
faster
15.
Early satellites were placed in an orbit a few hundred kilometers above the Earth's surface called a(n)...
a)
geostationary orbit (GEO).
b)
low stationary orbit (LSO).
c)
high Earth orbit (HEO).
d)
low Earth orbit (LEO).
16.
A satellite that travels in an orbit that exactly matches the Earth's rotation is traveling in a(n)
a)
low Earth orbit (LEO).
b)
low stationary orbit (LSO).
c)
geostationary orbit (GEO).
d)
high Earth orbit (HEO).
17.
The force keeping an object in circular motion
a)
Centripetal
b)
Centrifugal
c)
Acceleration
d)
Velocity
18.
A car going around a roundabout at constant speed is accelerating.
a)
False
b)
True
19.
Centrifugal force is a real thing
a)
True
b)
False
20.

Which two factors determine the gravitational force between two objects?

a)

Time and temperature

b)

Color and composition

c)

Mass and distance

d)

Shape and orbital speed

21.
In this equation...
a)
G is the gravitational field strength
b)
r is the distance between the 2 masses
c)
F is the repulsive gravitational force
d)
m is the momentum of the mass
22.
Which of the following is Newton's Law on Gravitation?
a)
F=Gm1m2/r
b)
F = Gm1m2/r2
c)
F = Gm1m2/2r
d)
F = m1m2/2r
23.
If I double the distance between two objects, what happens to their gravitational Force?
a)
4x bigger
b)
4x smaller
c)
2x bigger
d)
2x smaller
24.
If I double the mass of one object, but don't change anything else... WHat happens to the gravitational force between two objects?
a)
Doubles
b)
Quadruples
c)
Cut in Half
d)
4x Smaller
25.

The velocity a rocket must reach to escape from a planet or moons gravitational pull

a)

Vacuum

b)

Satellite

c)

Escape velocity

d)

Geosynchronous orbit

26.

Kepler's First Law states

a)

objects attract other objects with a force that is directly proportional to the product of their masses

b)

the square of the ratio of the periods of any two planets revolving around the Sun is equal to the cube of the ratio of their average distance from the Sun

c)

An imaginary line joining a planet and the sun sweeps out an equal area of space in equal amounts of time.

d)

Planets move about the Sun in an elliptical orbit with the Sun at one of the foci.

27.

Kepler's Second Law states

a)

objects attract other objects with a force that is directly proportional to the product of their masses

b)

the square of the ratio of the periods of any two planets revolving around the Sun is equal to the cube of the ratio of their average distance from the Sun

c)

An imaginary line joining a planet and the sun sweeps out an equal area of space in equal amounts of time.

d)

Planets move about the Sun in an elliptical orbit with the Sun at one of the foci.

28.

Kepler's Third Law states

a)

objects attract other objects with a force that is directly proportional to the product of their masses

b)

the square of the ratio of the periods of any two planets revolving around the Sun is equal to the cube of the ratio of their average distance from the Sun

c)

An imaginary line joining a planet and the sun sweeps out an equal area of space in equal amounts of time.

d)

Planets move about the Sun in an elliptical orbit with the Sun at one of the foci.

29.
Planets orbit the Sun in a shape called a(n)
a)
circle
b)
ellipse
c)
focus
d)
perihelion
30.
Where is the planet moving faster
a)
Position A to B
b)
Position B to C
c)
Position H to I
d)
Position I to J
31.

What happens to the strength of a magnetic field as you move away from the magnet?

a)

The strength of the magnetic field increases.

b)

The strength of the magnetic field doesn't change.

c)

The strength of the magnetic field is doubled.

d)

The strength of the magnetic field decreases.

32.

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

a)

attract, repel

b)

repel, repel

c)

attract, attract

d)

repel, attract

33.

What happens when an electric current flows through a wire?

a)

The wire begins to spin.

b)

Nothing happens.

c)

A field of gravity is created around the wire.

d)

A magnetic field is created around the wire.

34.

Why might a current-carrying wire be placed between a magnetic field?

a)

To increase the current from the interaction of magnetic fields

b)

To increase the voltage from the interaction of magnetic fields

c)

To produce a force from the interaction of magnetic fields

35.

What direction is the force/motion in the following diagram?

a)

Perpendicular to the magnets

b)

Downwards

c)

Parallel and through the magnets

36.

A 20 cm section of wire with a current of 8 A is at 90 degrees to a 0.1 T magnetic field. What direction is the force and calculate the size of it? F = BIlF\ =\ BIl  

a)

up, 0.1 x 8 A x 20 cm = 16 N

b)

down, 0.1 x 8 A x 20 cm = 16 N

c)

down, 0.1 x 8 A x 0.20 m = 0.16 N

d)

up, 0.1 x 8 A x 0.20 m = 0.16 N

37.

How does a split ring commutator work?

a)

Swaps the contact evert full turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.

b)

Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil do not experience a force in the same direction.

c)

Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.

38.
The voltmeter is at 0 in this image. How would you manipulate the experiment to create electricity (measured in volts)?
a)
Flip the magnet around so the North pole is facing out
b)
Move the magnet back and forth
c)
Take the magnet out
d)
Add more coils around the paper cylinder
39.

The graph represents

a)

DC Generator

b)

AC Generator

40.
Step up transformers...
a)
have more turns on their primary coil
b)
have more turns on their secondary coil
c)
have equal numbers of turns on their primary and secondary coil
41.

According to Lenz’s law the direction of an induced current in a conductor will be that which tends to produce which of the following effects?

a)

enhance the effect which produces it

b)

produce a greater heating effect

c)

produce the greatest voltage

d)

oppose the effect which produces it

42.

The figure shows a bar magnet moving vertically upward toward a horizontal coil. The poles of the bar magnets are labeled X and Y. As the bar magnet approaches the coil it induces an electric current in the direction indicated on the figure (counter- clockwise as viewed from above). What are the correct polarities of the magnet?

a)

X is a north pole,Y is a south pole

b)

X is a south pole,Y is a north pole

c)

Both X and Y are north poles

d)

Both X and Y are south poles

43.

Each element produces its own pattern of emission spectra lines because each element has its own distinct

a)

Speed of light

b)

Electron configuration

c)

Number of neutrons

d)

None of these

44.

The color of emitted light with the LONGEST wavelength is

a)

violet

b)

green

c)

red

d)

indigo

45.

The color of emitted light with the SHORTEST wavelength is

a)

violet

b)

green

c)

red

d)

indigo

46.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Sodium

47.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Helium

48.

Read the following statements:


I. It explains the origin of the emission spectrum for Hydrogen only.

II. It is impossible to know both the position and the momentum of the electron

III. It does not specify the position of the electron in the atom.


What options correspond to deficiencies of the Bohr's atomic model?

a)

I and II

b)

I and III

c)

II and III

d)

I, II and III

49.

When an electron moves from n=4 to n=1, what wavelength of energy is emitted?

a)

97 nm

b)

410 nm

c)

434 nm

d)

1282 nm

50.

State whether true or false.

Every element has its own unique atomic spectra.

a)

True

b)

False

51.

By analyzing light received from a star, we learn...

a)

Chemical Composition

b)

Density

c)

Magnetic Field

d)

Size of the Sun

52.

What happens when you shine a light through a prism?

a)

The prism absorbs the light

b)

The amount of light is low density

c)

There is a continuous spectra of light

d)

There is no light that shines through

53.
What best describes the doppler effect?
a)
An apparent change in frequency of a wave due to the relative motion between a wave source and an observer
b)
When sound changes pitch
c)
When light changes color
d)
An apparent change in the amplitude of a wave due to the relative motion between a wave source and an observer.
54.
If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be...
a)
Moving towards the Earth
b)
Moving away from the Earth
c)
This is a trick question that cannot be answered
d)
It isn't a star, it is a very large blueberry.
55.
If a star is being observed from Earth and it's light has shifted towards the red side of the electromagnetic spectrum it would be...
a)
Moving towards the Earth
b)
Moving away from the Earth
c)
This is a trick question that cannot be answered
d)
It isn't a star, it is a very large blueberry.
56.
Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.
a)
It is not moving
b)
It is moving away from Earth (Redshift)
c)
It is moving towards Earth (Blueshift)
d)
It is moving towards Earth (Redshift)
57.
How old do scientists think the Universe is?
a)
13.8 billion years old
b)
4.5 billion years old
c)
24,000 years old
d)
5 years old
58.

What is Hubble's Law?

a)

The farther away a galaxy is from us, the faster it moves away from us.

b)

The farther away a galaxy is from us, the slower it moves away from us.

c)

The closer a galaxy is to us, the faster it moves away from us.

d)

The more red light we observe from another galaxy, the closer we are to that galaxy

59.
What were the original two elements in our universe?
a)
Lithium and Carbon
b)
Hydrogen and Neon
c)
Helium and Chlorine
d)
Hydrogen and Helium
60.

What is one major piece of evidence that the Big Bang theory is correct?

a)

Astronomers have detected leftover radiation from the Big Bang

b)

Everything in the universe has remained in the same location for billions of years

c)

Astronomers have discovered that the universe is no longer expanding

d)

Astronomers have discovered evidence that the universe will soon begin contracting in a "Big Crunch"

61.
A gigantic explosion that causes the death of a large star is called
a)
pulsar
b)
red giant 
c)
supernova
d)
black hole
62.
A ________ is an object so dense with so much gravity that even light cannot escape.
a)
neutron star
b)
white dwarf
c)
blackhole
d)
black dwarf
63.
This is a young star that glows as gravity brings it together
a)
Nebula
b)
Protostar
c)
Main-sequence star
d)
Red giant
64.
What is the name of the largest stars?
a)
Protostars
b)
Supergiants
c)
Red Giants
d)
Dwarf Stars
65.

Stars give off heat and light in a process called ___________.

a)

nuclear fusion

b)

supernova

c)

luminosity

d)

spectroscopy

66.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron
67.
Solve this equation for alpha decay.
20985At = ___ + 42He
a)
20583Bi
b)
20986Rn
c)
20781Tl
d)
20885At
68.
Solve this equation for beta decay.
6027Co = ___ + 0-1e
a)
5625Mn
b)
6028Ni
c)
5823V
d)
5927Co
69.
The least penetrating form of radiation is _____.
a)
alpha
b)
beta
c)
gamma
d)
UV
70.
The most penetrating form of radiation is _____.
a)
alpha
b)
beta
c)
gamma
d)
UV
71.
Arrange in order of increasing ability to penetrate matter.
a)
Beta, gamma, alpha
b)
Alpha, gamma, beta
c)
Gamma, beta, alpha
d)
Alpha, beta, gamma
72.

According to which law does an EMF get generated in a conductor when it is placed in a constantly changing magnetic field?

a)

Lenz's Law

b)

Faraday's Law

c)

Oersted's Law

d)

Coulomb's Law

73.

The electric field generated will oppose the magnetic field that created it. This is which law?

a)

Oersted's Law

b)

Coulomb's Law

c)

Faraday's Law

d)

Lenz's Law

74.

Identify the wrong statement.

a)

Eddy currents are produced in a steady magnetic field.

b)

Eddy currents can be minimised by using laminated core

c)

Induction furnace use eddy currents to produce heat

d)

Eddy current can be used to produce braking force in moving trains.

75.

Two polarizing filters are set up so the transmitted light is at a maximum intensity.

Through which angle should polariser 2 be rotated so that no light is transmitted?

a)

45º

b)

60º

c)

90º

d)

180º

76.
Thomas Young's double slit experiment proved that light had a _____ nature.
a)
particle
b)
wave
c)
particle-wave
d)
wave-particle
77.
Einstein's Photoelectric Effect proved that light had a ____ nature.
a)
particle
b)
wave
c)
wave-particle
d)
particle-wave
78.
De Broglie provided a mathematical model of the electron as a ____.
a)
wave
b)
particle
c)
tsunami
d)
energy
79.

Choose the correct statement of an ideal blackbody

a)

Emits 100% of the light it generates, but cannot absorb its own radiation

b)

Absorbs half of the light incident upon it and emits half of the radiation it generates

c)

Absorbs all light incident on it, or emits all of the radiation it generates

d)

Absorbs 100% of the light incident upon it, but cannot emit light of its own

80.

One of the colours below is associated with the lowest temperature. Which one?

a)

red

b)

blue

c)

green

d)

orange

81.

A light source is found to be emitting electromagnetic radiation with a frequency of 1015 Hz. Calculate the temperature of the source

a)

4560 K

b)

6540 K

c)

7320 K

d)

9660 K

82.

Cauculate the deBroglie wavelength of a 0.05 g projectile fired at 180 ms-1

a)

2.4 x 10-27 m

b)

1.8 x 10-30 m

c)

7.4 x 10-32 m

d)

7.4 x 10-35 m

83.

Choose the correct statement for photon

a)

Photon is a quantum of electromagnetic wave

b)

Photon is a particle with a positive charge

c)

Photon is a particle with a negative charge

d)

Photon is the electron produced when light is incident on a metal's surface

84.
The Heisenberg Uncertainty Principle states
a)
velocity and position cannot be determined at the same time
b)
a beam of light can interfere with the path and speed of an electron
c)
photons do not affect the position of an electron
d)
the velocity of a car cannot accurately be measured by a radar beam
85.
The de Broglie wave equation showed that the wavelength of any moving object is equal to
a)
m/hν
b)
h/mv
c)
v/mh
d)
hm/v
86.
He discovered the Theory of Relativity
a)
Harold Weinstein
b)
John Nash
c)
Albert Einstein
d)
Christiaan Huygens
87.
"Everything that goes up must come down."
a)
Max Planck
b)
Isaac Newton
c)
Albert Einstein
d)
Justus Liebig
88.
Created the periodic table of elements.
a)
Marie Curie
b)
Niels Bohr
c)
Enrico Fermi
d)
Dmitri Mendeleev
89.
Proved that the Earth wasn't the center of the universe.
a)
Nicolaus Copernicus
b)
Aristotle
c)
Archimedes
d)
William Harvey
90.
Coined the term radioactivity.
a)
Richard Feynman
b)
Marcello Malpighi
c)
Neils Bohr
d)
Marie Curie
91.
Discovered nuclear fission in 1939.
a)
Otto Hahn
b)
Gregor Mendel
c)
Sigmund Freud
d)
Thomas Edison
92.
A pioneer of Alternating Current motors.
a)
Thomas Edison
b)
Nikola Tesla
c)
Guglielmo Marconi
d)
Louis Pasteur
93.
Find the direction of the magnetic force.
a)
Into the screen
b)
Out of the screen
c)
Right
d)
Left
94.

Based on his findings, Maxwell determined that electromagnetic waves and light must actually be different forms of the same thing.

a)

True

b)

False

95.

Without Maxwell's work, there wouldn't be:

a)

radio

b)

television

c)

microwaves

d)

all of the above

96.

Maxwell's work laid the foundation for (choose three)

a)

quantum physics

b)

Einstein's work

c)

color photography

d)

all of the above

97.

A rocket leaves Earth and travels to a star that is 20 light years (one light year equals 9.46E15 meters) as seen by the Earth. The speed of the rocket is 0.8c relative to the Earth. The time for the trip as measured on by the astronauts in the spaceship is

a)

25 years

b)

20 years

c)

15 years

d)

12 years

98.
When you approach a light source, the light from that source has a speed 
a)
greater than c. 
b)
less than c. 
c)
equal to c.
99.
What does the relativity of simultaneity say?
a)
Two events may occur at the same time in one reference frame, but not another.
b)
If two events occur at the same time in one reference frame, they will occur at the same time in all reference frames.
100.
How many postulates are there in the special theory of relativity?
a)
1
b)
2
c)
3
d)
4
101.
The speed of light is constant in all frames of reference.
a)
True
b)
False

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