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Optics
Page 7
Questions (4,167)
Which type of light does a flashlight produce?
incoherent cold light white light coherent
1 answer
asked by
mir
80 views
What type of image does a concave lens produce?
no image only a virtual image both real and virtual images only a real image
3 answers
asked by
mir
112 views
What type of lens is thicker in the center than at the edges?
a reflecting lens a virtual lens a concave lens a convex lens
1 answer
asked by
mir
108 views
Why doesn’t any light escape from the sides of an optical fiber?
because the angle of incidence is so small because the angle
1 answer
asked by
mir
102 views
What angle of incidence is required for total internal reflection?
a small angle a large angle a 90° angle a 180° angle
1 answer
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mir
108 views
How can signals be sent through optical fibers?
by changing the color of light by changing the frequency by sending pulses of
1 answer
asked by
mir
71 views
What causes a mirage?
a refraction of light as it as passes through layers of air at different temperatures a refraction of light
3 answers
asked by
mir
84 views
What is the bending of light rays as they enter a new medium?
refraction diffuse reflection regular reflection diffraction
1 answer
asked by
mir
76 views
Why do prisms project a spectrum when a white light shines through them?
different colors of light are refracted at different
1 answer
asked by
mir
109 views
What does a concave lens look like?
thicker in the center than at the edges thinner in the center than at the edges flat on one
1 answer
asked by
mir
68 views
What is necessary to achieve total internal reflection?
a small angle of incidence a mirror a large angle of incidence an optical
1 answer
asked by
mir
73 views
Total internal reflection _____.
causes light rays to travel in parallel lines through optical fiber allows most laser light to
1 answer
asked by
mir
107 views
How is light amplified in a laser?
Photons collide with gas particles, multiply, and reflect back and forth in a tube. Photons
1 answer
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mir
91 views
A laser is used to make a CD or DVD by _____.
creating a holographic surface on a plastic disc burning grooves into a blank
1 answer
asked by
mir
84 views
What does “stimulated emission of radiation” mean?
Radioactive particles in a laser emit gamma rays of the same wavelength.
3 answers
asked by
mir
142 views
The convex lens in an optical instrument’s eyepiece _____.
gathers light magnifies the image turns the image right side up
4 answers
asked by
mir
68 views
A refracting telescope uses an objective lens _____.
to produce an upright image to magnify the image to view very small objects
3 answers
asked by
mir
94 views
What is the purpose of the plane mirror in a reflecting telescope?
to keep the image in focus to magnify the image to gather
1 answer
asked by
mir
83 views
Optical instruments all use _____ either to magnify images or to gather and focus light.
convex lenses concave lenses concave
1 answer
asked by
mir
110 views
Which instrument makes use of a concave mirror?
microscope reflecting telescope refracting telescope camera
1 answer
asked by
mir
86 views
A concave lens _____.
is thicker at its center than at the edges bends light rays away from the optical axis produces real and
1 answer
asked by
mir
71 views
A concave lens _____.
can form real and virtual images can only form real images can only form virtual images can form images
1 answer
asked by
mir
64 views
A convex lens with an object placed closer to it than its focal point _____.
forms a real image on the same side of the lens
1 answer
asked by
mir
87 views
How would you describe the image that would be produced by the concave lens in the drawing?
a virtual, upside-down image at point
1 answer
asked by
mir
70 views
How would you describe the image that would be produced by the convex lens in the drawing?
a real, upside-down image at point B a
1 answer
asked by
mir
131 views
In relation to the object, where is a virtual image formed with a convex and a concave lens?
A. on the object side of a concave
1 answer
asked by
mir
75 views
How does a prism produce colors from white light?
A prism bends different wavelengths of light by different amounts. A prism
1 answer
asked by
mir
101 views
Refract means _____.
to bend to twist to bounce to reverse
1 answer
asked by
mir
50 views
You can sometimes see a mirage because _____.
white light reflects off smooth surfaces light rays can be bent by hot air light
1 answer
asked by
mir
72 views
You can sometimes see a mirage because _____.
light rays can be bent by hot air light rays can be bent by puddles asphalt roads
1 answer
asked by
mir
67 views
Refract means _____.
to bend to bounce to twist to reverse
1 answer
asked by
mir
49 views
A material with the highest index of refraction _____.
reflects light the least reflects light the most bends light the least
1 answer
asked by
mir
78 views
How does a prism produce colors from white light?
Glass changes the speed of white light, causing the colors to separate. A prism
1 answer
asked by
mir
97 views
What type of image does a plane mirror produce?
real and upright virtual and upright virtual and inverted real and inverted
1 answer
asked by
mir
70 views
A transparent material _____ light.
diffuses reflects transmits absorbs
1 answer
asked by
mir
65 views
How does the image produced by a plane mirror compare to the original object?
It is upright and the same size as the original
1 answer
asked by
mir
65 views
What is formed when a copy of an object is formed by reflected light?
an image a mirage a mirror an echo
1 answer
asked by
mir
90 views
The color seen when a translucent object is looked at is the color it _____.
reflects transmits absorbs complements
1 answer
asked by
mir
68 views
What happens when parallel rays of light hit a smooth surface?
regular reflection plane reflection diffuse reflection
1 answer
asked by
mir
106 views
What is a flat sheet of glass with a silver-colored coating on one side?
plane mirror plane lens concave lens convex mirror
1 answer
asked by
mir
81 views
The image produced by a plane mirror _____.
reverses up and down is larger than the object reverses left and right is smaller
1 answer
asked by
mir
65 views
The representation of light as a straight line is called a _____.
beam particle wave ray
1 answer
asked by
mir
52 views
When light rays from your body are reflected in a plane mirror, _____.
they are actually coming from behind the mirror your brain
1 answer
asked by
mir
65 views
A reflection is diffuse if _____.
it reverses left and right it produces a virtual image it produces rays at different angles it
1 answer
asked by
mir
66 views
A virtual image is _____.
an upside-down image that forms where light rays meet an image projected by a mirror onto another
1 answer
asked by
mir
73 views
Complementary colors of light combine to make _____.
white magenta yellow cyan
1 answer
asked by
mir
69 views
The color of a pigment is the color of the light _____.
that it absorbs that shines through it that strikes it that it reflects
1 answer
asked by
mir
55 views
What determines the color of an opaque object?
the wavelengths of light that it absorbs the color of light that strikes it the
1 answer
asked by
mir
74 views
Which type of material transmits most of the light that strikes it without scattering any?
transparent opaque translucent
1 answer
asked by
mir
76 views
What determines the color of an opaque object?
the color of light that passes through it the wavelengths of light that it
1 answer
asked by
mir
78 views
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