Question 13.5 pts
A diver shines light upward to the surface of a smooth pond at 30° to the normal. Most light passes into the air above while the part that reflects back into the water makes an angle to the normal of ______.
Group of answer choices
more than 30°
less than 30°
all refracts, none reflects
30°
Question 23.5 pts
Which can be projected on a screen?
Group of answer choices
a real image
a virtual image
both of these
neither of these
Question 33.5 pts
To "shoot" a blue fish with a red laser beam, aim your laser _______.
Group of answer choices
above the sighted fish
below the sighted fish
directly at the sighted fish
Question 43.5 pts
The physics behind the color of the sky involves ________.
Group of answer choices
different processes for sunsets and blue jays
scattered sunlight
absorbed sunlight
Question 53.5 pts
The critical angle is the angle in which all light within the medium at its upper surface is _____.
Group of answer choices
refracted
absorbed
reflected
diffused
dispersed
Question 63.5 pts
Refraction in the atmosphere makes the hours of day a little _______.
Group of answer choices
longer in summer but shorter in winter
shorter
longer
Question 73.5 pts
Refraction of light makes changes in the ______.
Group of answer choices
frequency
wavelength
both of these
neither of these
Question 83.5 pts
When a fish is placed out of the water, it will have better vision if it has goggles that are _______.
Group of answer choices
extremely shiny
filled with water
hemispherical
tinted blue
none of the above
Question 93.5 pts
When a pulse of white light is incident on a glass prism, the first color to emerge is ______.
Group of answer choices
violet
orange
red
green
Question 103.5 pts
To "shoot" a red fish with a red laser beam, aim your laser ______.
Group of answer choices
directly at the sighted fish
below the sighted fish
above the sighted fish
Question 113.5 pts
Light travels along the path of _____.
Group of answer choices
least distance
least time
least expense
least complication
least effort
Question 123.5 pts
When the speed of light in medium is 2 × 108 m/s, its index of refraction is ______.
Group of answer choices
1.5
0.50
1.0
0.67
2.0
Question 133.5 pts
Which are consequences of different speeds of light in different media?
Group of answer choices
rainbows
brilliant colors of diamonds
mirages
all of the above
none of the above
Question 143.5 pts
A red tomato will appear black when illuminated with _______.
Group of answer choices
yellow light
magenta light
blue light
cyan light
none of the above
Question 153.5 pts
The secondary rainbow is slightly dimmer than the primary rainbow because ______.
Group of answer choices
of an extra reflection and refraction in the drops
it simply has less energy than the primary bow
its colors are inverted
it is larger, and its energy is spread over more area
it is farther from the viewer
Question 163.5 pts
A rough surface for infrared waves can be polished for _____.
Group of answer choices
light waves
radio waves
both of these
neither of these
Question 173.5 pts
The atmosphere of Jupiter is about 1000 km thick. From Jupiter's surface, the Sun at noon would appear ______.
Group of answer choices
faintly white
white
not at all
none of the above
Question 183.5 pts
How long does it take light to reach us from the Sun?
Group of answer choices
8 seconds
8 hours
7 seconds, reflex time
8 minutes
Question 193.5 pts
Our eyes are not very good at seeing _____.
Group of answer choices
color in dim light
motion at our peripheries
differences in brightness
all of the above
none of the above
Question 203.5 pts
If an electron vibrates at a rate of 1000 vibrations per second, it generates an electromagnetic wave having a ______.
Group of answer choices
wavelength of 1000 km
speed of 1000 m/s
wavelength of 1000 m
frequency of 1000 Hz
period of 1000 s
Please show your full solution steps. First state what is given, then start with the symbolic equation, then show data entered into the equation, and then the final answer with proper units. Please write your steps vertically. You will not gain credit for showing only the answer.
Question 2110 pts
By reference to Figure 27.9, p. 508 (how primary colors mix) complete the followings:
1) Yellow + Blue = ________
2) Green + ________= White
3) Magenta + Yellow + Cyan = ________
Question 2210 pts
If the speed of light is a particular kind of glass is 190,000 km/s, calculate the index of refraction for this glass. Given that the speed of light in vacuum is 300,000 km/s.
Question 2310 pts
Is it possible to have a total internal reflection of light that is incident from air to glass?
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