Question 1

The speed of ultraviolet radiation in free space compared with the speed of visible radiation in free space is

Accepted Answer

A)  very much greater. 
B)  a little greater. 
C)  the same. 
D)  a little less. 
E)  very much less. 
A)  very much greater. 
B)  a little greater. 
C)  the same. 
D)  a little less. 
E)  very much less.

Question 2

The photon energy for light of wavelength 500 nm is approximately

Accepted Answer

A)  1.77 eV 
B)  3.10 eV 
C)  6.20 eV 
D)  2.48 eV 
E)  5.46 eV 
A)  1.77 eV 
B)  3.10 eV 
C)  6.20 eV 
D)  2.48 eV 
E)  5.46 eV

Question 3

The lifetime of a typical excited atomic energy state is of the order of

Accepted Answer

A)  10-6 s 
B)  10-7 s 
C)  10-8 s 
D)  10-9 s 
E)  10-10 s 
A)  10-6 s 
B)  10-7 s 
C)  10-8 s 
D)  10-9 s 
E)  10-10 s

Question 4

A glass block with index of refraction 1.50 is immersed in water whose index of refraction is 1.33. The critical angle at the glass-water interface is

Accepted Answer

A)  6.5º 
B)  41.9º 
C)  48.8º 
D)  56.3º 
E)  62.5º 
A)  6.5º 
B)  41.9º 
C)  48.8º 
D)  56.3º 
E)  62.5º

Question 5

Four perfectly polarizing plates are stacked so that the axis of each plate is turned 30º clockwise with respect to that of the plate above it. The percentage of the incident unpolarized light that is transmitted by the stack is approximately

Accepted Answer

A)  zero 
B)  0.78% 
C)  6.3% 
D)  21% 
E)  27% 
A)  zero 
B)  0.78% 
C)  6.3% 
D)  21% 
E)  27%

Question 6

The rays in the figure are reflected and refracted at the front and back surfaces of the glass. Which of the following is true of these rays?

Accepted Answer

A)  $\angle$ 1 =$\angle$ 2 = $\angle$ 3 =$\angle$ 4 
B)  $\angle$ 1 = $\angle$2; $\angle$ 3 = $\angle$4; but $\angle$ 1 $\neq$ $\angle$ 3 
C)  $\angle$ 1 = $\angle$ 2 = $\angle$ 3; but $\angle$ 4 $\neq$$\angle$ 1 
D)  $\angle$ 1 = $\angle$ 4; but $\angle$ 2 $\neq$ $\angle$ 4 
E)  $\angle$ 1 $\neq$ $\angle$ 2 $\neq$  $\angle$3 $\neq$$\angle$ 4 
A)  $\angle$ 1 =$\angle$ 2 = $\angle$ 3 =$\angle$ 4 
B)  $\angle$ 1 = $\angle$2; $\angle$ 3 = $\angle$4; but $\angle$ 1 $\neq$ $\angle$ 3 
C)  $\angle$ 1 = $\angle$ 2 = $\angle$ 3; but $\angle$ 4 $\neq$$\angle$ 1 
D)  $\angle$ 1 = $\angle$ 4; but $\angle$ 2 $\neq$ $\angle$ 4 
E)  $\angle$ 1 $\neq$ $\angle$ 2 $\neq$  $\angle$3 $\neq$$\angle$ 4

Question 7

A light wave is like a sound wave in that both

Accepted Answer

A)  are longitudinal waves. 
B)  are means of transmitting energy. 
C)  are transverse waves. 
D)  require a material medium for propagation. 
E)  have the same velocity in air. 
A)  are longitudinal waves. 
B)  are means of transmitting energy. 
C)  are transverse waves. 
D)  require a material medium for propagation. 
E)  have the same velocity in air.

Question 8

You are trying to catch fish by using a spear. You observe a large fish a couple of meters in front of you and a meter below the water surface. In order to hit the fish with your spear you must aim (assume that the fish is stationary and does not swim away in fright)

Accepted Answer

A)  directly at the point where you see the fish. 
B)  slightly above the point where you see the fish. 
C)  slightly below the point where you see the fish. 
D)  slightly to the left side of the point where you see the fish. 
E)  slightly to the right side of the point where you see the fish. 
A)  directly at the point where you see the fish. 
B)  slightly above the point where you see the fish. 
C)  slightly below the point where you see the fish. 
D)  slightly to the left side of the point where you see the fish. 
E)  slightly to the right side of the point where you see the fish.

Question 9

A helium-neon laser emits light of wavelength 632.8 nm and has a power output of
1)5 mW. How many photons are emitted per second by this laser?

Accepted Answer

A)  1.34* 1014  
B)  2.56 * 1015  
C)  3.09 * 1015  
D)  4.22* 1015  
E)  4.78 * 1015  
A)  1.34* 1014  
B)  2.56 * 1015  
C)  3.09 * 1015  
D)  4.22* 1015  
E)  4.78 * 1015

Question 10

Which of the following statements is true about the speeds of the various colors of light in glass?

Accepted Answer

A)  All colors of light have the same speed in glass. 
B)  violet has the highest speed, red the lowest 
C)  red has the highest speed, violet the lowest 
D)  green has the highest speed, red and violet the lowest 
E)  red and violet have the highest speed, green the lowest 
A)  All colors of light have the same speed in glass. 
B)  violet has the highest speed, red the lowest 
C)  red has the highest speed, violet the lowest 
D)  green has the highest speed, red and violet the lowest 
E)  red and violet have the highest speed, green the lowest

Question 11

Use the following figure to answer the next problem.  
-The plane of polarization of the reflected light lies

Accepted Answer

A)  parallel to the page. 
B)  at 45º with respect to the page. 
C)  at 34.6º with respect to the page. 
D)  at 55.4º with respect to the page. 
E)  perpendicular to the page. 
A)  parallel to the page. 
B)  at 45º with respect to the page. 
C)  at 34.6º with respect to the page. 
D)  at 55.4º with respect to the page. 
E)  perpendicular to the page.

Question 12

In the laboratory you used the spectrometer to determine the indices of refraction of various wavelengths of light. The curve that could represent a plot of the index of refraction as a function of the wavelength of the light is

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 13

The prism totally reflects some wavelengths of light as shown, but other wavelengths pass through. The index of refraction of this prism for the longest wavelengths that are totally reflected is approximately

Accepted Answer

A)  1.50 
B)  1.53 
C)  1.46 
D)  1.41 
E)  1.59 
A)  1.50 
B)  1.53 
C)  1.46 
D)  1.41 
E)  1.59

Question 14

It has been suggested that a fundamental physical unit of time is the time required for light to traverse the diameter of the nucleus of an atom (approximately 3 *10-13 m). This unit of time is approximately

Accepted Answer

A)  1 s 
B)  10-4 s 
C)  2 * 10-20 s 
D)  10-21 s 
E)  10-23 s 
A)  1 s 
B)  10-4 s 
C)  2 * 10-20 s 
D)  10-21 s 
E)  10-23 s

Question 15

Which of the following is not a property of all waves?

Accepted Answer

A)  refraction 
B)  diffraction 
C)  reflection 
D)  interference 
E)  polarization 
A)  refraction 
B)  diffraction 
C)  reflection 
D)  interference 
E)  polarization

Question 16

White light is incident on a prism from the left. After it passes through the first prism, a color spectrum of light is observed. The spectrum is then passed through a second prism which is inverted compared to the first prism. The color light that exit from the second prism

Accepted Answer

A)  is also a color spectrum and more spread out. 
B)  is also a color spectrum but less spread out. 
C)  is white in color. 
D)  has more colors than the first spectrum. 
E)  has less colors than the first spectrum. 
A)  is also a color spectrum and more spread out. 
B)  is also a color spectrum but less spread out. 
C)  is white in color. 
D)  has more colors than the first spectrum. 
E)  has less colors than the first spectrum.

The speed of ultraviolet radiation in free space compared with the speed of visible radiation in free space is

The photon energy for light of wavelength 500 nm is approximately

The lifetime of a typical excited atomic energy state is of the order of

A glass block with index of refraction 1.50 is immersed in water whose index of refraction is 1.33. The critical angle at the glass-water interface is

Four perfectly polarizing plates are stacked so that the axis of each plate is turned 30º clockwise with respect to that of the plate above it. The percentage of the incident unpolarized light that is transmitted by the stack is approximately

$The rays in the figure are reflected and refracted at the front and back surfaces of the glass. Which of the following is true of these rays?$ The rays in the figure are reflected and refracted at the front and back surfaces of the glass. Which of the following is true of these rays?

A light wave is like a sound wave in that both

You are trying to catch fish by using a spear. You observe a large fish a couple of meters in front of you and a meter below the water surface. In order to hit the fish with your spear you must aim (assume that the fish is stationary and does not swim away in fright)

A helium-neon laser emits light of wavelength 632.8 nm and has a power output of 1)5 mW. How many photons are emitted per second by this laser?

Which of the following statements is true about the speeds of the various colors of light in glass?

Use the following figure to answer the next problem. -The plane of polarization of the reflected light lies

It has been suggested that a fundamental physical unit of time is the time required for light to traverse the diameter of the nucleus of an atom (approximately 3 *10^-13 m). This unit of time is approximately

Which of the following is not a property of all waves?

White light is incident on a prism from the left. After it passes through the first prism, a color spectrum of light is observed. The spectrum is then passed through a second prism which is inverted compared to the first prism. The color light that exit from the second prism

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

Exam 11: Properties of Light

The speed of ultraviolet radiation in free space compared with the speed of visible radiation in free space is

The photon energy for light of wavelength 500 nm is approximately

The lifetime of a typical excited atomic energy state is of the order of

A glass block with index of refraction 1.50 is immersed in water whose index of refraction is 1.33. The critical angle at the glass-water interface is

Four perfectly polarizing plates are stacked so that the axis of each plate is turned 30º clockwise with respect to that of the plate above it. The percentage of the incident unpolarized light that is transmitted by the stack is approximately

The rays in the figure are reflected and refracted at the front and back surfaces of the glass. Which of the following is true of these rays?

A light wave is like a sound wave in that both

You are trying to catch fish by using a spear. You observe a large fish a couple of meters in front of you and a meter below the water surface. In order to hit the fish with your spear you must aim (assume that the fish is stationary and does not swim away in fright)

A helium-neon laser emits light of wavelength 632.8 nm and has a power output of 1)5 mW. How many photons are emitted per second by this laser?

Which of the following statements is true about the speeds of the various colors of light in glass?

Use the following figure to answer the next problem. -The plane of polarization of the reflected light lies

In the laboratory you used the spectrometer to determine the indices of refraction of various wavelengths of light. The curve that could represent a plot of the index of refraction as a function of the wavelength of the light is

The prism totally reflects some wavelengths of light as shown, but other wavelengths pass through. The index of refraction of this prism for the longest wavelengths that are totally reflected is approximately

It has been suggested that a fundamental physical unit of time is the time required for light to traverse the diameter of the nucleus of an atom (approximately 3 *10-13 m). This unit of time is approximately

Which of the following is not a property of all waves?

White light is incident on a prism from the left. After it passes through the first prism, a color spectrum of light is observed. The spectrum is then passed through a second prism which is inverted compared to the first prism. The color light that exit from the second prism

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

$The rays in the figure are reflected and refracted at the front and back surfaces of the glass. Which of the following is true of these rays?$ The rays in the figure are reflected and refracted at the front and back surfaces of the glass. Which of the following is true of these rays?

It has been suggested that a fundamental physical unit of time is the time required for light to traverse the diameter of the nucleus of an atom (approximately 3 *10^-13 m). This unit of time is approximately