an angstrom is
A a very short unit of distance
B a very long unit of distance
C a unit of frequency
D a unit of amplitude.
the wave characteristic most closely associated with the visual impression of brightness is
A speed
B frequency
C amplitude
D Doppler shift
which of the following wave characteristics is related to the brightness of a light source
A speed
B wavelength
C frequency
D amplitude?
as the wavelength of light increases
A the color gets redder
B the frequency increases
C the frequency decreases
D the brightness decreases
which of the following properties of light is associated with brightness
A wavelength
B speed
C amplitude
D frequency
light waves of greater frequency have
A shorter wavelength.
B longer wavelength.
C either of the above; there is no direct connection between frequency and wavelength.
the velocity of visible light waves is
A less than the theoretical value
B equal to the theoretical value
C greater than the theoretical value
D not related to the theoretical value
an angstrom is
A a unit used to measure distances to stars
B a unit to measure velocities of stars
C a unit used to measure the wavelength of light
D no choice
which of the following characteristics are the same for all light waves traveling in a vacuum
A amplitude
B frequency
C wavelength
D speed
the "angstrom" is a unit of length often used for
A wave lengths of visible light
B distances in the solar system
C distances between stars
D distances on the sun
for light waves, high frequency corresponds to
A long wavelength
B short wavelength
C high speed
D low amplitude
a photon is
A a moving electric charge
B a bundle of light waves
C a new unstable elementary particle
D a figment of our imagination
if the frequency and speed of an ultraviolet light wave is known, its wavelength
A cannot be determined without additional information
B can be determined only after lengthy and complicated calculations
C can be determined easily from a single formula
D is equal to its frequency.
a bundle of light waves is called a
A quantum number
B photon
C tachyon
D neutrino
the wave in the term "light wave" refers to
A the changing strength of the electric force
B the motion of particles moving along with the wave
C the oscillating motion of an invisible medium
D no concept at all but just a convenient phrase
the amplitude of a visible light wave is related to our perception of
A color
B brightness
C speed
D Doppler shift
vision in animals is possible when
A small particles given off by electrons enter the eye
B an electron from another object enters the eye
C electrons in the eye vibrate in sympathetic vibrations with electrons in another object
D atoms in the eye become very hot in reaction to some other heated substance
comparing visible light to radio, which carries more energy?
A visible light
B radio waves
C both carry the same amount of energy because they travel at the same speed.
the speed with which a changing electric force moves in a vacuum is
A dependent on the strength of the force
B dependent on the rate of change of the force
C infinitely fast
D the speed of light
the speed of light in a vacuum is
A always constant
B dependent on the speed of oscillation
C unmeasurable
D dependent on the color
the wavelength of visible light is
A millions of light years
B nearly one mile
C about an inch
D a tiny fraction of an inch
the speed of light in a vacuum depends on
A the frequency
B the wavelength
C the distance it has traveled
D nothing, it is a constant
the wavelength of a wave is
A the height of the wave
B the distance the wave travels
C the distance between crests of the wave
D the distance the oscillating electron moves in one oscillation
the speed of light in space is
A variable, depending upon the speed of its source, but very large
B infinite, traveling through space instantaneously
C very large, independent of the speed of its source
D very large, but unmeasurable
an angstrom is
A a unit of time
B a unit of frequency
C a unit of length used for large astronomical distances
D a unit of length used in spectroscopy
the speed of a light wave can be determined easily
A by measuring the length of time it takes to travel a certain distance
B by measuring its amplitude
C if its wavelength and frequency are known
D if the oscillations of the electron can be measured
a photon is a bundle of
A charged particles
B imaginary waves traveling in the aether
C oscillating electric and magnetic waves
D unknown particles.
as the wavelength of a wave is increased, its frequency
A increases
B stays constant
C decreases
D changes independently of the wavelength
since the velocity of light is constant, light of shorter wavelength will have
A a higher frequency.
B the same frequency.
C a lower frequency compared to light of longer wavelength.
as the frequency of a light wave increases its
A amplitude must increase
B amplitude must decrease
C wavelength must increase
D its speed remains constant
all photons moving through space have the same
A wavelength
B frequency
C energy
D speed
radio waves travel through space at what speed?
A much faster than the speed of light
B much slower than the speed of light
C slightly faster than the speed of light, since their wavelength is longer
D at the speed of light
the longer the wavelength of a light wave,
A the smaller the frequency
B the larger the frequency
C the frequency is always the same
D the frequency does not depend on wavelength
a photon is
A a positively charged nuclear particle
B an instrument that astronomers attach to a telescope to help record light
C an element with a high atomic number
D a packet of light waves
the speed of a light wave in a vacuum
A depends on its frequency
B depends on its wavelength
C depends on its energy
D is always the same
the distance between a crest and the adjacent trough in a wave is
A its wavelength
B half its wavelength
C twice its wavelength
D its amplitude
in light of the same color, each photon has the same
A wavelength
B energy
C frequency
D all of the above
as the wavelength of a light wave becomes longer
A its frequency decreases
B its energy increases
C its mass increases
D its velocity decreases
the wavelength of visible light is about
A an inch
B a centimeter
C a hundred thousandth of an inch
D a mile
all light waves moving through empty space have the same
A wavelength
B frequency
C energy
D speed
two beams of light that differ in color must have
A different wavelengths
B different amplitudes
C different reflection
D different speeds
the brighter a beam of light, the
A faster it travels in a vacuum
B longer its wavelength
C shorter its wavelength
D greater its amplitude
if the frequency of a light wave is given, to find the wavelength you must
A measure it since it can have any value
B perform a simple calculation
C perform a complicated calculation beyond the level of this course
D none of the above is correct
all forms of light traveling in a vacuum have the same
A speed
B energy per photon
C wavelength
D frequency
visible light has a wavelength of about
A 1,000,000 inches
B 1 inch
C 0.01 inches
D 0.000001 inches
the color of a light wave is related to its
A wavelength
B speed
C energy
D Doppler shift
the wavelength of a wave is defined as
A the distance between wave crests
B the distance the wave travels in one second
C the difference in color relative to red
D the height of the wave
the speed of light in a vacuum
A increases as the wavelength increases
B increases as the frequency increases
C increases as the amplitude increases
D is the same for all light waves
the wavelength of visible light is approximately
A a billionth of an inch
B a few hundred thousandths of an inch
C an inch
D a yard
which of the following characteristics of a light wave is ordinarily associated with color
A speed
B amplitude
C wavelength
D frequency?
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