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PHY 2nd Sem Review II

Total questions: 120

Worksheet time: 2hrs 35mins

Name
Class
Date
1.
The number of wavelengths that pass a point each second
a)
frequency
b)
wavelength
c)
pitch
d)
amplitude
2.
Sound waves are ALWAYS what type of wave?
a)
Transverse
b)
Longitudinal 
c)
Depends 
d)
always different
3.
As a sound source approaches and then moves past a stationary observer, the observer will hear
a)
a steady rise in pitch
b)
a sudden drop in pitch
c)
a drop in pitch, then a rise in pitch
d)
a rise in pitch, then a drop in pitch
4.
A mechanical wave cannot travel through...
a)
a vacuum(empty space).
b)
water.
c)
air. 
d)
glass.
5.

Which of the figures correctly represents reflection?

a)

A

b)

B

c)

C

d)

D

6.
Which of the following represents refraction?
a)
A
b)
B
c)
C
d)
D
7.
The velocity of light in vacuum is _______ m/s.
a)
3x108
b)
3x1012
c)
3x106
d)
3x1010
8.
Light has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45
a)
diamond
b)
water
c)
flint glass
d)
barium glass
9.

A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees as measured from the normal. What is the angle of refraction? (air n=1, crown glass n=1.532)

a)

39.7 degrees

b)

19.0 degrees

c)

59.1 degrees

d)

12.3 degrees

10.
What phenomenon does this image demonstrate?
a)
Constructive interference
b)
Destructive interference
c)
Increasing frequency
d)
Increasing period
11.
What phenomenon does this image demonstrate?
a)
Constructive interference
b)
Destructive interference
c)
Increasing frequency
d)
Increasing period
12.
How many nodes and antinodes are shown in the picture?
a)
4 nodes, 3 antinodes
b)
4 nodes, 6 antinodes
c)
6 nodes, 4 antinodes
d)
3 nodes, 4 antinodes
13.

What type of reflection occurs when parallel rays of light hit an irregular surface?

a)

regular reflection

b)

diffuse reflection

c)

specular reflection

d)

total internal reflection

14.
The point at which the light rays meet is called the focal point.
a)
true
b)
False
15.
In the formula 1/f=1/do +1/di, the variable "do" refers to _____.
a)
the object distance from the lens
b)
the image distance from the lens
c)
the object height
d)
the image height
16.
In the formula 1/f = 1/do + 1/di, the variable "di" refers to _____.
a)
the object distance from the lens
b)
the image distance from the lens
c)
the object height
d)
the image height
17.
A converging lens has a focal length of 30 cm. A 5 cm tall candle is placed at a distance of 10 cm in front of the lens. Determine the image distance.
a)
- 45 cm
b)
-30 cm
c)
-15 cm
d)
6 cm
18.

This image is.....

a)

inverted and reduced

b)

inverted and enlarged

c)

not inverted and reduced

d)

not inverted and enlarged

19.
A wave with a large wavelength will have a ______ frequency and _____ energy
a)
high, low
b)
high, high
c)
low, high
d)
low, low
20.
Which has the LONGEST wavelength and, therefore, the lowest frequency/energy
a)
Gamma Rays
b)
Radio Waves
c)
Visible Light
d)
Infrared rays
21.
How are electromagnetic waves different from other waves? 
a)
They have very short wavelengths 
b)
They transmit energy instead of matter 
c)
They can travel through a vacuum 
d)
They can change direction by reflection 
22.
The distance between two crests or two troughs of a wave is called:
a)
frequency
b)
amplitud
c)
wavelength
d)
hertz
23.
The height of the wave is known as the _____________.
a)
amplitude
b)
crest
c)
trough
d)
wavelength
24.
The blue section of the wave is measuring _________________.
a)
wavelength
b)
crest
c)
trough
d)
amplitude 
25.
The orange line is measuring the _________________________.
a)
wavelength
b)
amplitude
c)
crest
d)
trough
26.

A concave lens...

a)

converges light rays toward each other and creates only real images.

b)

diverges light rays away from each other and creates only virtual images.

c)

converges light rays away from each other and creates only virtual images.

d)

diverges light rays away from each other and creates only real images

27.

A convex lens...

a)

converges light rays towards each other and can create real images.

b)

converges light rays towards each other and creates only virtual images.

c)

diverges light rays away from each other and creates only virtual images.

d)

diverges light rays away from each other and creates only real images.

28.
The Law of Reflection:
The angle of incidence is _________ the angle of reflection
a)
bigger than
b)
the same as
c)
smaller than
29.
Which explains why the fork looks different under water?
a)
light can't pass through the glass
b)
the wavelength of light lengthens
c)
the amount of light increases when going through water
d)
light is refracted at an angle
30.
_____ is a lens that is thicker in the middle and makes an object appear bigger.
a)
prism
b)
convex lens
c)
concave lens
d)
mirror
31.
______ is a lens that is thicker on its edges and makes an object appear smaller?
a)
mirror
b)
convex lens
c)
concave lens
d)
prism
32.
The part of a longitudinal wave where the particles of the medium are close together.
a)
rarefaction
b)
compression
c)
crest
d)
trough
33.
In what state of matter does sound travel the fastest?
a)
Solid
b)
Liquid 
c)
Gas
d)
Doesn't Matter
34.
A sound wave is produced when an object …
a)
Vibrates
b)
Accelerates
c)
Remains stationary
d)
Travels in a circle
35.
A disturbance that travels through a medium as a longitudinal wave
a)
sound
b)
wavelength
c)
pitch
d)
frequency
36.
The type of waves that require medium to pass:
a)
Mechanical Waves
b)
Electromagnetic Waves
37.
When the frequency of a wave increases, what happens to the wavelength?
a)
The wavelength is not directly affected by the frequency of a wave.
b)
The wavelength increases.
c)
The wavelength decreases.
d)
More specific information is needed to form a conclusion about the wavelength.
38.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
39.
A wave in which the particles of the medium vibrate parallel to the direction of the wave motion
a)
A. mechanical wave
b)
B. surface wave
c)
C. longitudinal wave
d)
D. wave
40.
A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling
a)
A. surface wave
b)
B. transverse wave
c)
C. electromagnetic  wave
d)
D. longitudinal wave
41.
What is A in this image?
a)
amplitude
b)
compression
c)
rarefaction
d)
trough 
42.
What is B in this image?
a)
wavelength
b)
rarefaction
c)
frequency
d)
amplitude
43.
The distance from any point on a wave to an identical point on the next wave
a)
frequency
b)
wavelength
c)
wave speed
d)
amplitude
44.
What is the speed of sound in air at 20* C?
a)
150 miles/hours
b)
344 meters/second
c)
3,000 meters/second
d)
600 miles/second
45.
All waves transmit...
a)
energy
b)
particles
c)
matter
d)
sound
46.
When a violin string responds to another violin string, we call that...
a)
acoustics
b)
reverberations
c)
resonance
d)
harmonics
47.
Which of the following can sound travel through?
a)
solid
b)
liquid
c)
gas
d)
all of the above
48.
The SI unit for frequency is ________.
a)
m
b)
m/s
c)
hertz
d)
s
49.
How would a person measure the wavelength on this sound wave?
a)
dense to less dense
b)
trough to crest
c)
compression to compression
d)
beginning of illustration to the end
50.
Which letter(s) represent the trough of the wave?
a)
A
b)
B & D
c)
D
d)
C & G
51.
A wave that has a wavelength of 5 meters and a frequency of 60 Hz., what is the speed of the wave?
a)
5m/s
b)
300m/s
c)
30m/s
d)
60m/s
52.
When two or more waves are at the same place at the same time, the resulting effect is called 
a)
a standing wave
b)
a doppler wave
c)
a shock wave
d)
interference 
53.
The Doppler effect is the change in observed frequency due to 
a)
the original frequency of the source
b)
the type of medium the is in
c)
the motion of the source or observer
d)
the type of wave
54.
The distinctive quality of a sound, dependent primarily on the frequency of the sound waves produced by its source.
a)
pitch
b)
transverse
c)
compression
d)
rarefaction
55.
—Constructive interference results in —____.
a)
larger amplitude.
b)
larger frequency.
c)
lower amplitude.
d)
lower wavelength
56.
Which of the four tuning forks pictured has the highest pitch?
a)
1024 Hz
b)
512 Hz
c)
256 Hz
d)
128 Hz
57.
Standing waves are the result of which of the following?
 
I. Reflection
II. Interference
III. Diffraction
a)
I only
b)
II only
c)
I and II only
d)
I and III only
58.
A person standing on a balcony sees a bird flying away while chirping at a frequency of 1000 Hz.  If the bird is flying at 10 m/s, what frequency is the person hearing?  Assume speed of sound to be 340 m/s.
a)
952 Hz
b)
971 Hz
c)
1015 Hz
d)
1030 Hz
59.

In a __ wave the particles vibrate perpendicular to the direction of the wave.

a)

Surface

b)

Longitudinal

c)

Transverse

d)

Compressional

60.

A wave that is 2 m long passes by with a frequency of 6 Hz. What is the speed at which this wave travels?

a)

12 m/s

b)

3 m/s

c)

0.5 m/s

d)

36 m/s

61.

An ocean wave usually occurs at a frequency of 0.2 Hz. What is the period of each wave?

a)

5 seconds

b)

0.2 seconds

c)

12 seconds

d)

300 seconds

62.

How are mechanical and electromagnetic waves different?

a)

only electromagnetic waves need a medium.

b)

electromagnetic and mechanical waves need a medium.

c)

only mechanical waves need a medium.

d)

neither wave has to have a medium

63.
This is a __________wave
a)
transverse
b)
longitudinal
c)
surface
d)
all of the above
64.
This is a __________wave
a)
transverse
b)
longitudinal
c)
surface
d)
all of the above
65.
When the crests of one wave overlap the crests of another wave or waves, this occurs.
a)
A. diffraction
b)
B. destructive interference
c)
C. constructive interference
d)
D. resonant frequencies
66.
What happens when you increase the amplitude of a sound?
a)
it makes the sound louder
b)
it makes the sound travel faster
c)
it increases the wavelength of the sound
d)
it increases the frequency of the sound
67.
Which travels faster, light or sound?
a)
Light
b)
Sound
68.
A jet fighter approaches, passes low overhead, and flies away. How does the pitch of its engine when it is flying away compare to the pitch when it was approaching you?
a)
louder
b)
lower
c)
higher
d)
unchanged
69.

What is an example of a mechanical transverse wave?

a)

Sound

b)

Rope

c)

Light

70.

What is an example of a mechanical longitudinal wave?

a)

Sound wave

b)

Light wave

c)

Ocean wave

d)

Rope

71.

Which wave has the greater amplitude?

a)

The top wave because the particles are farther apart

b)

The bottom wave because the particles are closer together.

72.

What happens to wavelength as the frequency of a wave increases?

a)

increase

b)

stays the same

c)

decreases

d)

becomes faster

73.

The human eye is only capable of seeing which electromagnetic wave?

a)

Infrared Light

b)

Ultraviolet Light

c)

Visible Light

d)

All of the above

74.

What electromagnetic wave do humans emit as heat energy?

a)

infrared light

b)

ultraviolet light

c)

visible light

d)

microwaves

75.

Which of the following is correct in order from lowest to highest energy?

a)

X Rays, Visible Light, Microwave

b)

Ultraviolet, Visible Light, Gamma-Rays

c)

Microwave, Visible Light, Gamma Rays

76.

Which type of electromagnetic wave has the longest wavelength?

a)

visible light

b)

radio waves

c)

ultraviolet waves

d)

gamma rays

77.

This type of electromagnetic wave has different colors of light that all have different wavelengths.

a)

Gamma Rays

b)

Microwaves

c)

Infrared

d)

Visible Light

78.
The frequency of infrared waves is..
a)
1012 Hz
b)
1020 Hz
c)
104 Hz
d)
1015 Hz
79.
What is an example of a wave with a long wavelength and low frequency?
a)
Gamma rays
b)
Infrared
c)
Radio
d)
Visible light
80.
An example of a wave with a short wavelength, high frequency, and high energy is a 
a)
X-ray
b)
Microwave
c)
Visible light wave
d)
Infrared wave
81.

Black holes emit tremendous amounts of energy which result in astronomers using many different means of technology to gather information. Instruments such as the GALEX satellite and Spitzer Space Telescope use different parts of the electromagnetic spectrum to gather data about these strange celestial objects. To view black holes, the GALEX typically operates at a frequency of about 1.3 X 1015 Hz while the Spitzer Space Telescope operates at 2.2 X 1012 Hz.

Which two portions of the electromagnetic spectrum are astronomers using to detect information about black holes?

a)

Ultraviolet and X-Ray

b)

Gamma Ray and X-Ray

c)

Ultraviolet and Infrared

d)

Infrared and Radio

82.

The Earth’s atmosphere allows some types of electromagnetic radiation through while others may be blocked or absorbed. Due to this, astronomers developed satellites and telescopes which orbit outside of Earth’s atmosphere. The Cosmic Background Explorer (COBE) satellite took measurements from 1989 to 1993 with an effort to gather information on the background temperature in space resulting from the Big Bang. This was the first step toward confirming data gathered in the 1960’s when an Earth-bound telescope picked up static in the frequency range of 3 x 108 to 3 x 1011 Hz.


Which portion of the electromagnetic spectrum were astronomers detecting?

a)

Microwave

b)

Ultraviolet

c)

X-Ray

d)

Gamma

83.

Scientists observed a celestial object emitting a wavelength of 3 x 10-10m. What type of telescope did the scientists have to use to view this?

a)

Radio wave

b)

Infrared ray

c)

X-ray

d)

Gamma Ray

84.

Scientists observed a celestial object emitting waves with a frequency of 1.41 x 108 Hz. What type of telescope did the scientists have to use to view this object?

a)

Radio wave

b)

Microwave

c)

X-ray

d)

Ultraviolet wave

85.
Select the correct order of waves on the EMS from the longest wavelength to the shortest wavelength
a)
Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
b)
Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
c)
Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
d)
Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma
86.

If you see a green leaf on a tree, that means...

a)

Green is the color being reflected off the leaf.

b)

Green is the color being absorbed by the leaf.

c)

All the colors are being reflected off the leaf.

d)

All the colors are being absorbed by the leaf.

87.
What color appears when all colors are absorbed?
a)
black
b)
red
c)
white
d)
violet
88.
The three primary colors of light are
a)
Red, Blue, Yellow
b)
Pink, Green, Blue
c)
Violet, Green, Red
d)
Blue, Green, Red
89.
EM waves _______ travel the same speed in a vacuum. 
a)
never
b)
sometimes
c)
always
d)
can
90.
The relationship between wavelength and frequency is λ=c/f.  Calculate the wavelength of light that has a frequency of 5.2 x 1012 1/s. The speed of of light is 3.0x 108 m/s.
a)
5.8 x 10 -5 m
b)
5.8 x 10 -7 m
c)
5.19 x 10 14 m
d)
1.56 x 10 23 m
91.
Solve this problems using the equation: 
C = λν
If an AM radio station broadcasts at
9.95 x 105 Hz, what is the wavelength of this radiation?
a)
6.59 x 10-28 m
b)
1.01 x 10-6 m
c)
3.32 x 10-3 m
d)
302 m
92.

IRAS, the Infrared Astronomy Satellite launched by NASA in 1983, had a detector that measured infrared or heat radiation from different regions of space. What is the frequency of infrared light that has a wavelength of

1.10 X 10-6 m?

a)

3.67 x 10-15 Hz

b)

3.67 x 10-3 Hz

c)

2.73 x 102 Hz

d)

2.73 x 1014 Hz

93.
What happens to the speed of a light ray when it enters a more dense material?
a)
It slows down
b)
It speeds up
c)
It stays the same
94.
What are the properties of the image of a plane mirror?
a)
Real, Enlarged
b)
Virtual, Enlarged
c)
Real, Same Size
d)
Virtual Same Size
95.
An image that forms at a location from which the real light rays appear to come together but do not actually cross
a)
real 
b)
virtual
c)
critical
d)
focal
96.
A converging lens has a focal length of 30 cm. A 5 cm tall candle is placed at a distance of 10 cm in front of the lens. Determine the image distance.
a)
- 45 cm
b)
-30 cm
c)
-15 cm
d)
6 cm
97.
A convex lens is a __________ device.
a)
Convergent
b)
Divergent
c)
Reflective
d)
None of the option
98.
A Concave lens is a __________ device.
a)
Convergent
b)
Divergent
c)
Reflective
d)
None of the options
99.
Which of the following in the diagram is the incident ray?
a)
A
b)
B
c)
C
d)
D
100.
Which of the following in the diagram is the refracted ray?
a)
A
b)
B
c)
C
d)
D
101.

This image is...

a)

Inverted and reduced

b)

inverted and enlarged

c)

not inverted and reduced

d)

not inverted and enlarged

102.
An object of height 4 cm is placed 10 cm away from a concave lens of focal length 6 cm as shown below.Image is 
a)
virtual.inverted
b)
virtual,upright
c)
real,inverted
d)
real,upright
103.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
104.
Which diagram below correctly represents rays of light passing through a glass lens
a)
A
b)
B
c)
C
d)
D
105.

Fiber optic cables work because light

a)

cannot exist inside a fiber creating a vacuum

b)

reflects away and lights up everything

c)

stands still when inside a very dense fiber

d)

cannot escape because of total internal reflection

106.
The diagram below shows light ray R entering air from water. Through which point is the ray most likely to pass
a)
A
b)
B
c)
C
d)
D
107.
When a light ray moves from air into glass at an angle of 45 degrees to the normal, its path is
a)
bent toward the normal
b)
bent away from the normal
c)
parallel to the normal
d)
not bent
108.
Which of the following is NOT true about the speed of light
a)
Can be greater than 3x108 m/s
b)
decreases in more optically dense material
c)
is equal to 3x108 m/s in a vacuum
d)
Can never be greater than 3x108 m/s
109.

___ occurs when a light beam bounces off a mirror.

a)

Diffuse reflection

b)

Specular reflection

c)

Refraction

d)

Total internal reflection

110.

___ occurs when a light beam from a flashlight reflects off a sheet of notebook paper.

a)

Diffuse reflection

b)

Specular reflection

c)

Refraction

d)

Total internal reflection

111.
Light passes from air into another medium at an angle of 25 degrees to the normal. If the angle or refraction is 15 degrees, what is the index of refraction of the new medium?
a)
0.203
b)
4.9
c)
1.63
d)
0.61
112.
A virtual image formed by a single lens will always be
a)
enlarged
b)
inverted
c)
upright
d)
reduced
113.
The speed of light in some transparent material is 2.1x108 m/s. What is the index of refraction for the material.
a)
1.43
b)
0.70
c)
1.43x1016m/s
d)
7x107 m/s
114.
If an object is located 15 cm from the convex lens and the focal point is also at 15 cm, what kind of image is formed?
a)
Real
b)
Virtual
c)
No image
115.
An image is located at 5 cm from the convex lens and the focal length is 3 cm. Where is the object located?
a)
3/15 cm
b)
2/15 cm
c)
5 cm
d)
7.5 cm
116.
If the angle of incidence of light traveling through air, and then striking water is 35 degrees what is the angle of refraction? (n=1 air, n= 1.53 water)
a)
.57 degrees
b)
22 degrees
c)
.006 degrees
d)
61 degrees
117.

When will a convex lens produce an enlarged virtual image?

a)

when the object is between f and 2f

b)

when the object is at the focal length

c)

when the object is less than a focal length away from the lens

d)

when the object is greater than 2f away from the lens

118.

When will a convex lens produce an enlarged real image?

a)

when the object is between f and 2f

b)

when the object is at the focal length

c)

when the object is less than a focal length away from the lens

d)

when the object is greater than 2f away from the lens

119.

When will a convex lens produce an reduced real image?

a)

when the object is between f and 2f

b)

when the object is at the focal length

c)

when the object is less than a focal length away from the lens

d)

when the object is greater than 2f away from the lens

120.

When will a convex lens produce a image that is the same size as the object?

a)

when the object is between f and 2f

b)

when the object is at the focal length

c)

when the object is less than a focal length away from the lens

d)

when the object is greater than 2f away from the lens

e)

when the object is located at 2f

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