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Optics
Page 7
Questions (4,275)
How is light amplified in a laser?
Photons collide with gas particles, multiply, and reflect back and forth in a tube. Photons
1 answer
asked by
mir
94 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
87 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
144 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
72 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
98 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
88 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
114 views
Which instrument makes use of a concave mirror?
microscope reflecting telescope refracting telescope camera
1 answer
asked by
mir
88 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
76 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
69 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
90 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
72 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
134 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
80 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
110 views
Refract means _____.
to bend to twist to bounce to reverse
1 answer
asked by
mir
53 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
78 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
72 views
Refract means _____.
to bend to bounce to twist to reverse
1 answer
asked by
mir
51 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
81 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
101 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
72 views
A transparent material _____ light.
diffuses reflects transmits absorbs
1 answer
asked by
mir
70 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
69 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
95 views
The color seen when a translucent object is looked at is the color it _____.
reflects transmits absorbs complements
1 answer
asked by
mir
73 views
What happens when parallel rays of light hit a smooth surface?
regular reflection plane reflection diffuse reflection
1 answer
asked by
mir
111 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
89 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
70 views
The representation of light as a straight line is called a _____.
beam particle wave ray
1 answer
asked by
mir
55 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
69 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
69 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
78 views
Complementary colors of light combine to make _____.
white magenta yellow cyan
1 answer
asked by
mir
71 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
57 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
78 views
Which type of material transmits most of the light that strikes it without scattering any?
transparent opaque translucent
1 answer
asked by
mir
77 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
81 views
Which type of material absorbs light?
opaque transparent translucent
1 answer
asked by
mir
84 views
Which type of material scatters light as it passes through?
Opaque Transparent Translucent
1 answer
asked by
mir
81 views
Which of the following statements about light is true?(1 point)
Responses A. The speed of light in a vacuum depends on the
1 answer
asked by
Unknown
196 views
How do the frequencies and the speeds of yellow light and blue light compare?(1 point)
Responses A. The frequency of yellow light
4 answers
asked by
Unknown
412 views
What is it called when light shining on certain substances causes an electric current to flow?
infrared radiation the
1 answer
asked by
mir
126 views
Visible light can be separated into various colors to form a(n) _____.
thermogram MRI spectrum X-ray picture
1 answer
asked by
mir
66 views
Which color of visible light has the longest wavelength?
green violet yellow red
1 answer
asked by
mir
93 views
If a 60° glass prism has a refractive index of 1•5 what is it's angle of minimum deviation
2 answers
asked by
Asher
59 views
An object 5cm high is placed at a distance of 12cm from a convex lens of focal length 8cm calculate the position and
2 answers
asked by
Asher
61 views
A thin converging lens is found to form an image of a distant building 24 cm from the lens. If an insect is now placed 16 cm
4 answers
asked by
Tanya
4,029 views
In your own words, how does total internal reflection make fiber optic messages possible?
2 answers
asked anonymously
45 views
What happens to the speed of the light as it travels from the air, through the glass, and then through the water?
A. The speed of
1 answer
asked by
Jsmzjsmj
76 views
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