PHY 101 Light and Color Quiz
30 test answers
Unlock all answers in this set
Unlock answers 30question
Red light has a longer wavelength than violet light. Which has the greater frequency?
answer
Violet light
Unlock the answer
question
Which travels faster through a vacuum - an infrared ray or a gamma ray?
answer
Both travel at the same speed
Unlock the answer
question
Compared to ultraviolet waves, the wavelength of infrared waves is
answer
Longer
Unlock the answer
question
Compared to radio waves, the velocity of visible light waves in a vacuum is
answer
The same
Unlock the answer
question
Compared to its average speed in air, the average speed of a beam of light in glass is
answer
Less
Unlock the answer
question
Color depends on what characteristic of light?
answer
Its frequency
Unlock the answer
question
Magenta light is really a mixture of
answer
Red and blue light
Unlock the answer
question
Colors seen on TV results from color
answer
Addition
Unlock the answer
question
Colors seen on the cover of our physics book result from color
answer
Subtraction
Unlock the answer
question
A sheet of red paper will look black when illuminated with
answer
Cyan light
Unlock the answer
question
A blue object will appear black when illuminated with
answer
Yellow light
Unlock the answer
question
Red + Green + Blue = White (T/F)
answer
True
Unlock the answer
question
Red + Green = Yellow = White - _______
answer
Blue
Unlock the answer
question
Red + blue = Magenta = White - _______
answer
Green
Unlock the answer
question
Green + Blue = Cyan = White - _______
answer
Red
Unlock the answer
question
Yellow + Blue light = ______
answer
White
Unlock the answer
question
Green light + ______ = White
answer
Magenta
Unlock the answer
question
Magenta + yellow + cyan = _______
answer
Black
Unlock the answer
question
Which has the greatest energy - a photon of infrared light, of visible light, or of ultraviolet light?
answer
A photon of ultraviolet light
Unlock the answer
question
Light is emitted when an electron
answer
Makes a transition to a lower energy level
Unlock the answer
question
Ultraviolet light is
answer
Electromagnetic energy
Unlock the answer
question
The dark lines in the sun's spectrum represent light that is
answer
Absorbed by the sun's atmosphere
Unlock the answer
question
The hottest star is the star that glows
answer
Blue
Unlock the answer
question
The energy of a photon is related to
answer
None of these (Wavelength)
Unlock the answer
question
The highest frequency light of those below is
answer
Violet
Unlock the answer
question
A certain object emits infrared waves. If it were to emit light waves instead, its temperature would have to be
answer
Higher
Unlock the answer
