If the object distance (s) is less than the focal length (f) then ...

[sabina]

If the object distance (s) is less than the focal length (f) then the image is ____________.
 Fill in the blank(s) with correct word

Question 2

The two most common types of poor eyesight are the result of improper ______________.
 Fill in the blank(s) with correct word

Question 3

In order to see a rainbow, the Sun must be _______________ you
 Fill in the blank(s) with correct word

Question 4

The sky is blue because of ____________.
 Fill in the blank(s) with correct word

Question 5

The orientation of an image seen projected on a screen by a single lens is always __________.
 Fill in the blank(s) with correct word

Question 6

A __________ lens is thinner at the center than the edges.
 Fill in the blank(s) with correct word

Question 7

A __________ lens is thicker at the center than the edges.
 Fill in the blank(s) with correct word

Question 8

A person looking through eyeglasses sees __________ images.
 Fill in the blank(s) with correct word

Question 9

Image height divided by object height gives __________.
 Fill in the blank(s) with correct word

Question 10

The type of mirror that will allow you to see large areas normally hidden from your view is __________.
 Fill in the blank(s) with correct word

Question 11

The two types of reflection are ______________ and ___________.
 Fill in the blank(s) with correct word

Question 12

The ideal shape for the primary mirror of a telescope is __________.
 Fill in the blank(s) with correct word

Question 13

A one-way mirror works because __________.
 Fill in the blank(s) with correct word

Question 14

The colors you see with a prism result because of __________.
 Fill in the blank(s) with correct word

Question 15

__________ results because the speed of light in a transparent medium varies with frequency.
 Fill in the blank(s) with correct word

Question 16

When you look into a pool of water, the depth looks less than it actually is because of __________.
 Fill in the blank(s) with correct word

Question 17

The critical angle is that angle of incidence for which the angle of refraction equals ______.
 Fill in the blank(s) with correct word

Question 18

A light ray bends when it goes from one medium to another because of __________.
 Fill in the blank(s) with correct word

Question 19

When myopia is corrected surgically, the shape of the ________ is changed.
 Fill in the blank(s) with correct word

Question 20

A ________ lens is used to compensate for hyperopia.
 Fill in the blank(s) with correct word

Question 21

You see colors in a rainbow because of __________.
 Fill in the blank(s) with correct word

Question 22

Optical fibers work because of __________.
 Fill in the blank(s) with correct word

Question 23

Light is totally absorbed when sent through two Polaroid filters if their transmission axes are __________.
 Fill in the blank(s) with correct word

Question 24

Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of __________.
 Fill in the blank(s) with correct word

Question 25

When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on a screen because of __________.
 Fill in the blank(s) with correct word

Question 26

Light spreads out when it passes through a narrow slit because of __________.
 Fill in the blank(s) with correct word

Question 27

Liquid crystal displays make use of __________.
 Fill in the blank(s) with correct word

Question 28

You do not see your image when you look at a flat rough aluminum surface because of __________.
 Fill in the blank(s) with correct word

Question 29

In the case of magnification, if image distance (p) is positive, the image is to the ______ of the lens and ______.
 a. right b. left
  c. real d. imaginary
  e. virtual

Question 30

An image seen projected on a screen by a single lens
 a. is always erect.
  b. is always inverted.
  c. is a real image.
  d. is a virtual image.
  e. none of the above

Question 31

A lens that is thinner at the center than the edges
 a. is a converging lens.
  b. is a diverging lens.
  c. always forms a real image.
  d. always forms a virtual image.
  e. none of the above

Question 32

A person looking through eyeglasses sees
 a. real images.
  b. virtual images.
  c. erect images.
  d. inverted images.
  e. polarized images.

Question 33

If the magnification produced by an optical system is negative, the image is
 a. smaller than the object.
  b. inverted.
  c. upside down.
  d. all of the above.

Question 34

The Hubble Space Telescope
 a. has a flawed primary mirror.
  b. has been repaired.
  c. has failed.
  d. none of the above

Question 35

You look at yourself in a plane mirror. If you move away from the mirror and look at yourself again, you now see
 a. more of yourself.
  b. less of yourself.
  c. the same amount of yourself.
  d. a larger image of yourself.
  e. a smaller image of yourself.

Question 36

Fresnel lenses are
 a. made of mirror segments.
  b. made of the surface portions of a regular lens.
  c. found in some auto headlamps and theater lights and rear windows of RVs.
  d. all of the above.

Question 37

When light enters glass from air, which of these properties of the light change?
 a. frequency b. wavelength
  c. speed d. all of the above

Question 38

When a light ray traveling in air meets the surface of a piece of glass, which of the following occur at the interface?
 a. The light is totally reflected.
  b. Some of the light is reflected back into the air.
  c. Some light enters the glass and is refracted toward the normal.
  d. Some light enters the glass and is refracted away from the normal.
  e. All of the light enters the glass.

Question 39

Halos are most often observed in the ____________ time of the year
 a. spring b. summer
  c. fall d. winter

Question 40

In an astronomical telescope the secondary mirror is
 a. concave. b. convex.
  c. spherical. d. plane.

Question 41

The light directly from the Sun is
 a. polarized. b. unpolarized.
  c. horizontally polarized. d. vertically polarized.

Question 42

The advantage of a convex mirror is that it has a __________ field of view
 a. narrow b. linear
  c. wide d. open

Question 43

The mirror on the passenger side of modern automobiles is a ___________ mirror
 a. convex b. concave
  c. plane d. spherical

Question 44

The fact that light can be polarized shows that light is
 a. polar. b. monochromatic.
  c. an electromagnetic wave. d. a transverse wave.

Question 45

Two otherwise identical light waves arriving at the same point with peak matching valley undergo
 a. constructive interference.
  b. destructive interference.
  c. polarization.
  d. none of the above.

Question 46

Of EM waves having these wavelengths, which would be visible?
 a. 100 nm
  b. 500 nm
  c. 1000 nm
  d. 1 nm
  e. none of the above

Question 47

A nanometer is
 a. one thousandth of a meter.
  b. one millionth of a meter.
  c. one billionth of a meter.
  d. one trillionth of a meter.
  e. none of the above.

Question 48

A lens that is thicker at the center than the edges
 a. is a converging lens.
  b. is a diverging lens.
  c. always forms a real image.
  d. always forms a virtual image.
  e. none of the above

Question 49

Image height divided by object height gives
 a. image distance.
  b. object distance.
  c. magnification.
  d. real image size.
  e. virtual image size.

Question 50

An image formed using a converging lens
 a. is always real.
  b. is always virtual.
  c. can have negative magnification.
  d. can never be upright.

Question 51

The type of mirror that will allow you to see large areas normally hidden from your view is
 a. concave.
  b. convex.
  c. plane.
  d. half-silvered.
  e. Polaroid.

Question 52

The ideal shape for the primary mirror of a telescope is
 a. concave circular.
  b. convex circular.
  c. concave parabolic.
  d. convex parabolic.
  e. plane.

Question 53

A one-way mirror works because of
 a. interference.
  b. diffraction.
  c. its surfaces being half-silvered.
  d. dispersion.
  e. polarization.

Question 54

Upon entering a medium in which the speed of light is 1.5  108 m/s from a medium in which the speed of light is 2  108 m/s, an oblique light ray will be _____________ the normal to the interface between the two media.
 a. bent away from b. bent toward
  c. travel along d. remain undeviated with respect to

Question 55

What makes pink ink pink?
 a. refraction b. selective absorption
  c. dispersion d. none of the above

Question 56

Diverging light rays from a nearby object (a few focal lengths away from the mirror) strike the surface of a concave mirror. After reflecting from the mirror's surface, the rays will converge at
 a. the mirror's focal point.
  b. a point beyond the mirror's focal point.
  c. a point nearer than the mirror's focal point.
  d. none of the above.

Question 57

Parallel light rays from a distant object strike the surface of a concave mirror. After reflecting from the mirror's surface, the rays will converge at
 a. the mirror's focal point.
  b. a point beyond the mirror's focal point.
  c. a point nearer than the mirror's focal point.
  d. none of the above.

Question 58

What is meant by the term plane mirror?
 a. not an unusual mirror b. a flat mirror
  c. a horizontal mirror d. none of the above

Question 59

New telescopes are using adaptive optics.. What is that?
 a. using parabolic instead of spherical mirrors
  b. using computer image processing to enhance images
  c. building mirrors in hexagonal segments
  d. continually adjusting the mirror's shape during observations

Question 60

The primary mirror in an astronomical telescope must be a
 a. half-silvered mirror.
  b. convex mirror.
  c. concave mirror.
  d. plane mirror.

Question 61

The sky is blue because of
 a. interference.
  b. diffraction.
  c. scattering.
  d. dispersion.
  e. polarization.

Question 62

Rank the following media in order according to the speed of light in them, from slowest to fastest: vacuum, air, water and glass.
 a. air, water, glass, vacuum
  b. glass, air, water, vacuum
  c. water, glass, air, vacuum
  d. glass, water, air, vacuum
  e. none of the above

Question 63

You see colors with a prism because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. dispersion.
  e. polarization.

Question 64

The variation of the speed of light in a transparent medium with frequency results in
 a. interference.
  b. diffraction.
  c. dispersion.
  d. diffuse reflection.
  e. polarization.

Question 65

In air a light source emits a wavelength of 630 nm. Under water the wavelength of this light will be
 a. 630 nm.
  b. less than 630 nm.
  c. more than 630 nm.
  d. unpredictable.

Question 66

When you look into a pool of water, the depth looks less than it actually is because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. refraction.
  e. polarization.

Question 67

In optics, what is meant by an interface?
 a. optically connecting one computer to another
  b. using the image created by one lens as the object for another lens
  c. when the crest of one wave lines up with the trough of another wave
  d. none of the above

Question 68

A light ray bends when it goes from one medium to another because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. refraction.
  e. polarization.

Question 69

An object is 50 cm in front of a plane mirror. Its image will be located
 a. 50 cm in front of the mirror.
  b. at the mirror's surface.
  c. 50 cm behind the mirror.
  d. 25 cm in front of the mirror.
  e. 25 cm behind the mirror.

Question 70

Which of the following is not involved in the formation of a rainbow?
 a. interference b. dispersion
  c. internal reflection d. refraction

Question 71

If you see a rainbow near the time of sunset, where in the sky will the rainbow be?
 a. overhead
  b. toward the eastern horizon
  c. toward the western horizon
  d. toward the northern horizon
  e. toward the southern horizon

Question 72

You see colors in a rainbow because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. dispersion.
  e. polarization.

Question 73

Optical fibers work because of
 a. interference.
  b. diffraction.
  c. total internal reflection.
  d. diffuse reflection.
  e. polarization.

Question 74

According to the law of reflection, a light ray striking a mirror at an angle of incidence of 30 degrees will leaves the mirror at an angle of
 a. 60 degrees.
  b. 30 degrees.
  c. less than 30 degrees.
  d. none of the above.

Question 75

Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. diffuse reflection.
  e. polarization.

Question 76

When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on a screen because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. diffuse reflection.
  e. polarization.

Question 77

Thin film interference is responsible for the colors of
 a. bird feathers. b. gasoline spills.
  c. soap bubbles. d. all of the above.

Question 78

Light spreads out when it passes through a narrow slit because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. diffuse reflection.
  e. polarization.

Question 79

A helium neon laser generates light of 632.8-nm wavelength. What color is that?
 a. blue b. yellow
  c. red d. green

Question 80

The colors of objects we see by reflected light are due to
 a. interference. b. selective absorption.
  c. specular reflection. d. diffuse reflection.

Question 81

Why are optical fibers important for communication?
 a. They can carry thousands of times the information that wires can.
  b. Light goes faster than electricity.
  c. They carry digital information. Wires can't carry digital information.
  d. all of the above

Question 82

Liquid crystal displays make use of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. diffuse reflection.
  e. polarization.

Question 83

What is meant by the normal to a surface?
 a. a line perpendicular to the surface at a given point
  b. the angle between the surface and the light ray
  c. a line parallel to the surface at a given point
  d. the direction of a reflected ray

Question 84

You do not see your image when you look at a flat rough aluminum surface because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. diffuse reflection.
  e. polarization.

Question 85

You can see your image in a mirror because of
 a. interference.
  b. diffraction.
  c. specular reflection.
  d. diffuse reflection.
  e. polarization.

Question 86

In order to see a rainbow, the Sun must be directly in front of you.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 87

The sky is blue due to air molecules scattering sunlight in all directions.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 88

The speed of light in any transparent medium is the same as the speed of light in a vacuum.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 89

LCDs operate on the principle of refraction through glass.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 90

A magnifying glass with focal length 15 cm is placed 10 cm above a stamp. The image of the stamp is located 30 cm above the magnifying glass.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 91

Halos are caused by hexagonal ice crystals in the upper atmosphere.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 92

A converging lens always forms an object's image at the focal point of the lens.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 93

An image seen projected on a screen by a single lens is always inverted.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 94

In the atmosphere, the intensity of scattered sunlight of longer wavelength is greater than that of shorter wavelength.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 95

A diverging lens is thicker at the center than the edges.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 96

A person looking through eyeglasses sees real images.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 97

A convex mirror will allow you to see large areas normally hidden from your view.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 98

The Hubble Space Telescope has been repaired.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 99

Diverging lenses have negative focal lengths.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 100

The ideal shape for the primary mirror of a telescope is concave parabolic.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 101

A curved mirror that produces an enlarged image will also have a greater field of view than a plane mirror.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 102

You look at yourself in a plane mirror. If you move away from the mirror and look at yourself again, you now see more of yourself.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 103

A one-way mirror works because its surfaces are half-silvered.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 104

An EM wave with a wavelength of 500 nm will be visible.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 105

Astigmatism is due to too flat a cornea.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 106

The lens in your eye and the cornea both contribute to image formation.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 107

Your eye's iris changes the size of your pupil to adjust the amount of light that enters your eye.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 108

The colors you see with a prism result because the light is diffracted.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 109

Light goes slower through glass than through air.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 110

Light is a transverse wave.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 111

Dispersion results because the speed of light in a transparent medium varies with frequency.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 112

When you look into a pool of water, the depth looks less than it actually is because the light is dispersed.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 113

The path of a light ray through a refracting surface is reversible.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 114

A light ray can pass through a diverging lens without being deflected.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 115

A light ray bends when it goes from one medium to another because of diffraction.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 116

Blue light travels more slowly through glass than red light does.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 117

You see colors in a rainbow because of diffraction.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 118

Optical fibers work because of dispersion of light.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 119

Certain types of sunglasses are very effective at diminishing light reflected from surfaces because of polarization.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 120

When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on a screen because of interference.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 121

Light spreads out when it passes through a narrow slit because of interference.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 122

Liquid crystal displays make use of interference of light.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 123

You do not see your image when you look at a flat rough aluminum surface because of specular reflection.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 124

You can see your image in a mirror because of diffuse reflection.
 a. True
  b. False
  Indicate whether the statement is true or false

Question 125

What is the temperature (to one decimal place and in degrees K) for radiation that has a maximum wavelength ( max) of 3.5  106 m?

[Andromeda18]

Answer to Question 1

virtual

Answer to Question 2

focusing

Answer to Question 3

behind

Answer to Question 4

dispersion

Answer to Question 5

inverted

Answer to Question 6

diverging

Answer to Question 7

converging

Answer to Question 8

virtual

Answer to Question 9

magnification

Answer to Question 10

convex

Answer to Question 11

specular, diffuse

Answer to Question 12

concave parabolic

Answer to Question 13

its surfaces are half-silvered

Answer to Question 14

dispersion

Answer to Question 15

Dispersion

Answer to Question 16

refraction

Answer to Question 17

90 degrees

Answer to Question 18

refraction

Answer to Question 19

cornea

Answer to Question 20

converging

Answer to Question 21

dispersion

Answer to Question 22

total internal reflection

Answer to Question 23

perpendicular

Answer to Question 24

polarization

Answer to Question 25

interference

Answer to Question 26

diffraction

Answer to Question 27

polarization

Answer to Question 28

diffuse reflection

Answer to Question 29

a, c

Answer to Question 30

b, c

Answer to Question 31

b, d

Answer to Question 32

b, c

Answer to Question 33

b, c

Answer to Question 34

a, b

Answer to Question 35

c, e

Answer to Question 36

b, c

Answer to Question 37

b, c

Answer to Question 38

b, c

Answer to Question 39

d

Answer to Question 40

b

Answer to Question 41

b

Answer to Question 42

c

Answer to Question 43

a

Answer to Question 44

d

Answer to Question 45

b

Answer to Question 46

b

Answer to Question 47

c

Answer to Question 48

a

Answer to Question 49

c

Answer to Question 50

c

Answer to Question 51

b

Answer to Question 52

c

Answer to Question 53

c

Answer to Question 54

b

Answer to Question 55

b

Answer to Question 56

b

Answer to Question 57

a

Answer to Question 58

b

Answer to Question 59

d

Answer to Question 60

c

Answer to Question 61

c

Answer to Question 62

d

Answer to Question 63

d

Answer to Question 64

c

Answer to Question 65

b

Answer to Question 66

d

Answer to Question 67

d

Answer to Question 68

d

Answer to Question 69

c

Answer to Question 70

a

Answer to Question 71

b

Answer to Question 72

d

Answer to Question 73

c

Answer to Question 74

b

Answer to Question 75

e

Answer to Question 76

a

Answer to Question 77

d

Answer to Question 78

b

Answer to Question 79

c

Answer to Question 80

b

Answer to Question 81

a

Answer to Question 82

e

Answer to Question 83

a

Answer to Question 84

d

Answer to Question 85

c

Answer to Question 86

FALSE

Answer to Question 87

TRUE

Answer to Question 88

FALSE

Answer to Question 89

FALSE

Answer to Question 90

FALSE

Answer to Question 91

TRUE

Answer to Question 92

FALSE

Answer to Question 93

TRUE

Answer to Question 94

FALSE

Answer to Question 95

FALSE

Answer to Question 96

FALSE

Answer to Question 97

TRUE

Answer to Question 98

TRUE

Answer to Question 99

TRUE

Answer to Question 100

TRUE

Answer to Question 101

FALSE

Answer to Question 102

FALSE

Answer to Question 103

TRUE

Answer to Question 104

TRUE

Answer to Question 105

FALSE

Answer to Question 106

TRUE

Answer to Question 107

TRUE

Answer to Question 108

FALSE

Answer to Question 109

TRUE

Answer to Question 110

TRUE

Answer to Question 111

TRUE

Answer to Question 112

FALSE

Answer to Question 113

TRUE

Answer to Question 114

True
RATIONALE: One can, not all can.

Answer to Question 115

FALSE

Answer to Question 116

TRUE

Answer to Question 117

FALSE

Answer to Question 118

FALSE

Answer to Question 119

TRUE

Answer to Question 120

TRUE

Answer to Question 121

FALSE

Answer to Question 122

FALSE

Answer to Question 123

FALSE

Answer to Question 124

FALSE

Answer to Question 125

828.6 K