Question 1

The wave-particle duality of light means that,in the same experiment:

Accepted Answer

A) light will act both like a wave and like a particle. 
B) light will act either like a wave or like a particle. 
C) light will not act like either a wave or a particle. 
D) light always exists as two waves or as two particles. 
A) light will act both like a wave and like a particle. 
B) light will act either like a wave or like a particle. 
C) light will not act like either a wave or a particle. 
D) light always exists as two waves or as two particles.

Question 2

What is the energy of a photon of frequency 5.00 x 1014 Hz? (h = 6.626 x 10-34 J*s)

Accepted Answer

A) 3.31 x 10-19 J 
B) 3.31 x 10-47 J 
C) 1.33 x 10-48 J 
D) 1.33 x 10-24 J 
A) 3.31 x 10-19 J 
B) 3.31 x 10-47 J 
C) 1.33 x 10-48 J 
D) 1.33 x 10-24 J

Question 3

The photoelectric effect was discovered by:

Accepted Answer

A) Maxwell. 
B) Einstein. 
C) Hertz. 
D) Planck. 
A) Maxwell. 
B) Einstein. 
C) Hertz. 
D) Planck.

Question 4

A fiber optic cable (n = 1.50)is submerged in water (n = 1.33).What is the critical angle for light to stay inside the cable?

Accepted Answer

A) 83.1 $\degree$ 
B) 62.5 $\degree$ 
C) 41.8 $\degree$ 
D) 27.6 $\degree$ 
A) 83.1 $\degree$ 
B) 62.5 $\degree$ 
C) 41.8 $\degree$ 
D) 27.6 $\degree$

Question 5

A light beam is incident upon a still water surface.What is the maximum possible value for the angle of refraction? (nwater = 1.333).

Accepted Answer

A) 76.2 $\degree$ 
B) 67.5 $\degree$ 
C) 54.4 $\degree$ 
D) 48.6 $\degree$ 
A) 76.2 $\degree$ 
B) 67.5 $\degree$ 
C) 54.4 $\degree$ 
D) 48.6 $\degree$

Question 6

A beam of monochromatic light goes from material 1 with index of refraction n1 into material 2 with index of refraction n2.The frequency of light in material 1 is f1 and in material 2 is f2.What is the ratio of f1/f2?

Accepted Answer

A) n1/n2 
B) n2/n1 
C) 1 
D) The values of n1 and n2 must be known to find the answer. 
A) n1/n2 
B) n2/n1 
C) 1 
D) The values of n1 and n2 must be known to find the answer.

Question 7

A light ray in air is incident on an air-to-glass boundary at an angle of 30.0 $\degree$ and is refracted in the glass at an angle of 21.0 $\degree$ with the normal.Find the index of refraction of the glass.

Accepted Answer

A) 2.13 
B) 1.74 
C) 1.23 
D) 1.40 
A) 2.13 
B) 1.74 
C) 1.23 
D) 1.40

Question 8

Helium-neon laser light has a wavelength in air of 632.8 nm.What is the energy of a single photon in the beam? (h = 6.626 x 10-34 J*s and c = 3.00 x 108 m/s).

Accepted Answer

A) 3.14 x 10-19 J 
B) 5.40 x 10-19 J 
C) 7.62 x 10-19 J 
D) 1.15 x 10-18 J 
A) 3.14 x 10-19 J 
B) 5.40 x 10-19 J 
C) 7.62 x 10-19 J 
D) 1.15 x 10-18 J

Question 9

Fused quartz has an index of refraction of 1.56 for light from a 560-nm source.What is the speed of light for this wavelength within the quartz? (c = 3.00 x´ 108 m/s)

Accepted Answer

A) 1.56 x 108 m/s 
B) 1.92 x 108 m/s 
C) 2.19 x 108 m/s 
D) 4.68 x 108 m/s 
A) 1.56 x 108 m/s 
B) 1.92 x 108 m/s 
C) 2.19 x 108 m/s 
D) 4.68 x 108 m/s

Question 10

Tripling the wavelength of the radiation from a monochromatic source will change the energy content of the individually radiated photons by what factor?

Accepted Answer

A) 0.33 
B) 1.0 
C) 1.73 
D) 3.0 
A) 0.33 
B) 1.0 
C) 1.73 
D) 3.0

Question 11

Three materials with n1 2 3 are arranged in layers of uniform thickness.A light ray in air enters the first layer at an angle of incidence of 30 $\degree$ and the ray eventually exits the third layer at the refracted angle q in air.What is the value of q?

Accepted Answer

A) Some angle less than 30 $\degree$. 
B) 30 $\degree$. 
C) Some angle more than 30 $\degree$. 
D) Insufficient information to answer. 
A) Some angle less than 30 $\degree$. 
B) 30 $\degree$. 
C) Some angle more than 30 $\degree$. 
D) Insufficient information to answer.

Question 12

Dispersion occurs when:

Accepted Answer

A) some materials bend light more than other materials. 
B) a material slows down some wavelengths more than others. 
C) a material changes some frequencies more than others. 
D) light has different speeds in different materials. 
A) some materials bend light more than other materials. 
B) a material slows down some wavelengths more than others. 
C) a material changes some frequencies more than others. 
D) light has different speeds in different materials.

Question 13

When light reflects and produces a clear image,this reflection is referred to as:

Accepted Answer

A) specular reflection. 
B) diffuse reflection. 
C) retroreflection. 
D) double reflection. 
A) specular reflection. 
B) diffuse reflection. 
C) retroreflection. 
D) double reflection.

Question 14

A ray of light is incident on the mid-point of a glass prism surface at an angle of 25.0 $\degree$ with the normal.For the glass,n = 1.55,and the prism apex angle is 30.0 $\degree$.What is the angle of refraction as the ray enters the air on the far side of the prism?

Accepted Answer

A) 14.1 $\degree$ 
B) 22.3 $\degree$ 
C) 28.4 $\degree$ 
D) 46.0 $\degree$ 
A) 14.1 $\degree$ 
B) 22.3 $\degree$ 
C) 28.4 $\degree$ 
D) 46.0 $\degree$

Question 15

Newton's theory of light treated light as ________ while Young demonstrated that light behaved as ________ with ________ behavior.

Accepted Answer

A) particles,waves,refractive 
B) particles,waves,interference 
C) waves,particles,interference 
D) waves,particles,refractive 
A) particles,waves,refractive 
B) particles,waves,interference 
C) waves,particles,interference 
D) waves,particles,refractive

Question 16

If total internal reflection occurs at a glass-air surface:

Accepted Answer

A) no light is refracted. 
B) no light is reflected. 
C) light is leaving the air and hitting the glass with an incident angle greater than the critical angle. 
D) light is leaving the air and hitting the glass with an incident angle less than the critical angle. 
A) no light is refracted. 
B) no light is reflected. 
C) light is leaving the air and hitting the glass with an incident angle greater than the critical angle. 
D) light is leaving the air and hitting the glass with an incident angle less than the critical angle.

Question 17

Two mirrors are joined together along a common side,the planes of the mirrors separated by the angle è.If the joined mirrors can be used as a retroreflector when a beam of light strikes both surfaces (one after the other),what is the value of è?

Accepted Answer

A) 30 $\degree$ 
B) 45 $\degree$ 
C) 90 $\degree$ 
D) 135 $\degree$ 
A) 30 $\degree$ 
B) 45 $\degree$ 
C) 90 $\degree$ 
D) 135 $\degree$

Question 18

A monochromatic beam of light in air has a wavelength of 589 nm in air.It passes through glass (n = 1.52)and then through carbon disulfide (n = 1.63).What is its wavelength in the carbon disulfide?

Accepted Answer

A) 361 nm 
B) 387.5 nm 
C) 895 nm 
D) 960 nm 
A) 361 nm 
B) 387.5 nm 
C) 895 nm 
D) 960 nm

Question 19

A certain kind of glass has nblue = 1.650 for blue light and nred = 1.610 for red light.If a beam of white light (containing all colors)is incident at an angle of 30.0 $\degree$,what is the angle between the red and blue light inside the glass?

Accepted Answer

A) 0.22 $\degree$ 
B) 0.45 $\degree$ 
C) 1.90 $\degree$ 
D) 1.81 $\degree$ 
A) 0.22 $\degree$ 
B) 0.45 $\degree$ 
C) 1.90 $\degree$ 
D) 1.81 $\degree$

Question 20

Diamond has an index of refraction of 2.419.What is the critical angle for internal reflection inside a diamond that is in air?

Accepted Answer

A) 24.4 $\degree$ 
B) 48.8 $\degree$ 
C) 155 $\degree$ 
D) 131 $\degree$ 
A) 24.4 $\degree$ 
B) 48.8 $\degree$ 
C) 155 $\degree$ 
D) 131 $\degree$

Exam 22: Reflection and Refraction of Light

The wave-particle duality of light means that,in the same experiment:

What is the energy of a photon of frequency 5.00 x 1014 Hz? (h = 6.626 x 10-34 J*s)

The photoelectric effect was discovered by:

A fiber optic cable (n = 1.50)is submerged in water (n = 1.33).What is the critical angle for light to stay inside the cable?

A light beam is incident upon a still water surface.What is the maximum possible value for the angle of refraction? (nwater = 1.333).

A beam of monochromatic light goes from material 1 with index of refraction n1 into material 2 with index of refraction n2.The frequency of light in material 1 is f1 and in material 2 is f2.What is the ratio of f1/f2?

A light ray in air is incident on an air-to-glass boundary at an angle of 30.0 °\degree° and is refracted in the glass at an angle of 21.0 °\degree° with the normal.Find the index of refraction of the glass.

Helium-neon laser light has a wavelength in air of 632.8 nm.What is the energy of a single photon in the beam? (h = 6.626 x 10-34 J*s and c = 3.00 x 108 m/s).

Fused quartz has an index of refraction of 1.56 for light from a 560-nm source.What is the speed of light for this wavelength within the quartz? (c = 3.00 x´ 108 m/s)

Tripling the wavelength of the radiation from a monochromatic source will change the energy content of the individually radiated photons by what factor?

Three materials with n1 < n2 < n3 are arranged in layers of uniform thickness.A light ray in air enters the first layer at an angle of incidence of 30 °\degree° and the ray eventually exits the third layer at the refracted angle q in air.What is the value of q?

Dispersion occurs when:

When light reflects and produces a clear image,this reflection is referred to as:

A ray of light is incident on the mid-point of a glass prism surface at an angle of 25.0 °\degree° with the normal.For the glass,n = 1.55,and the prism apex angle is 30.0 °\degree° .What is the angle of refraction as the ray enters the air on the far side of the prism?

Newton's theory of light treated light as ________ while Young demonstrated that light behaved as ________ with ________ behavior.

If total internal reflection occurs at a glass-air surface:

Two mirrors are joined together along a common side,the planes of the mirrors separated by the angle è.If the joined mirrors can be used as a retroreflector when a beam of light strikes both surfaces (one after the other),what is the value of è?

A monochromatic beam of light in air has a wavelength of 589 nm in air.It passes through glass (n = 1.52)and then through carbon disulfide (n = 1.63).What is its wavelength in the carbon disulfide?

A certain kind of glass has nblue = 1.650 for blue light and nred = 1.610 for red light.If a beam of white light (containing all colors)is incident at an angle of 30.0 °\degree° ,what is the angle between the red and blue light inside the glass?

Diamond has an index of refraction of 2.419.What is the critical angle for internal reflection inside a diamond that is in air?

Introduction

Motion in One Dimension

Vectors and Two-Dimensional Motion

The Laws of Motion

Energy

Momentum and Collisions

Rotational Motion and the Law of Gravity

Rotational Equilibrium and Rotational Dynamics

Solids and Fluids

Thermal Physics

Energy in Thermal Processes

The Laws of Thermodynamics

Vibrations and Waves

Sound

Electric Forces and Electric Fields

Electrical Energy and Capacitance

Current and Resistance

Direct-Current Circuits

Magnetism

Induced Voltages and Inductance

Alternating Current Circuits and Electromagnetic Waves

Mirrors and Lenses

Wave Optics

Optical Instruments

Relativity

Quantum Physics

Atomic Physics

Nuclear Physics

Nuclear Energy and Elementary Particles

Filters

What is the energy of a photon of frequency 5.00 x 10¹⁴ Hz? (h = 6.626 x 10^-34 J*s)

A light beam is incident upon a still water surface.What is the maximum possible value for the angle of refraction? (n_water= 1.333).

A beam of monochromatic light goes from material 1 with index of refraction n₁ into material 2 with index of refraction n₂.The frequency of light in material 1 is f₁ and in material 2 is f₂.What is the ratio of f₁/f₂?

A light ray in air is incident on an air-to-glass boundary at an angle of 30.0 $\degree$ and is refracted in the glass at an angle of 21.0 $\degree$ with the normal.Find the index of refraction of the glass.

Helium-neon laser light has a wavelength in air of 632.8 nm.What is the energy of a single photon in the beam? (h = 6.626 x 10^-34 J*s and c = 3.00 x 10⁸ m/s).

Fused quartz has an index of refraction of 1.56 for light from a 560-nm source.What is the speed of light for this wavelength within the quartz? (c = 3.00 x´ 10⁸ m/s)

Three materials with n₁< n₂< n₃ are arranged in layers of uniform thickness.A light ray in air enters the first layer at an angle of incidence of 30 $\degree$ and the ray eventually exits the third layer at the refracted angle q in air.What is the value of q?

A ray of light is incident on the mid-point of a glass prism surface at an angle of 25.0 $\degree$ with the normal.For the glass,n = 1.55,and the prism apex angle is 30.0 $\degree$ .What is the angle of refraction as the ray enters the air on the far side of the prism?

Newton's theory of light treated light as while Young demonstrated that light behaved as with behavior.

A certain kind of glass has n_blue = 1.650 for blue light and n_red = 1.610 for red light.If a beam of white light (containing all colors)is incident at an angle of 30.0 $\degree$ ,what is the angle between the red and blue light inside the glass?