Question 1

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 2

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 3

A ray of white light, incident upon a glass prism, is dispersed into its various color components.Which one of the following colors experiences the greatest angle of deviation?

Accepted Answer

A) orange 
B) violet 
C) red 
D) green 
A) orange 
B) violet 
C) red 
D) green

Question 4

A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.49).If the velocity of the beam before it enters the plastic is 3.00 * 108 m/s, what is its velocity inside the block?

Accepted Answer

A) 3.00 * 108 m/s 
B) 1.93 * 108 m/s 
C) 2.01 * 108 m/s 
D) 1.35 * 108 m/s 
A) 3.00 * 108 m/s 
B) 1.93 * 108 m/s 
C) 2.01 * 108 m/s 
D) 1.35 * 108 m/s

Question 5

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

Accepted Answer

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

Question 6

A ray of light travels from a glass-to-liquid interface at an angle of 35.0$\degree$.Indices of refraction for the glass and liquid are, respectively, 1.52 and 1.63.What is the angle of refraction for the ray moving through the liquid?

Accepted Answer

A) 23.2$\degree$ 
B) 32.3$\degree$ 
C) 38.4$\degree$ 
D) 46.0$\degree$ 
A) 23.2$\degree$ 
B) 32.3$\degree$ 
C) 38.4$\degree$ 
D) 46.0$\degree$

Question 7

A container of flint glass (n = 1.66) holds a small quantity of benzene (n = 1.501). What is the critical angle for internal reflection of a ray in the glass when it is incident on the glass-to-liquid surface?

Accepted Answer

A) 89.5$\degree$ 
B) 64.7$\degree$ 
C) 41.1$\degree$ 
D) 37.0$\degree$ 
A) 89.5$\degree$ 
B) 64.7$\degree$ 
C) 41.1$\degree$ 
D) 37.0$\degree$

Question 8

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 9

Monochromatic light hits a piece of glass.What happens to the wavelength in the glass as the index of refraction increases?

Accepted Answer

A) decreases 
B) increases 
C) remains constant 
D) approaches 3 * 108 m 
A) decreases 
B) increases 
C) remains constant 
D) approaches 3 * 108 m

Question 10

A beam of light in air is incident at an angle of 30$\degree$to the surface of a rectangular block of clear plastic (n = 1.46).The light beam first passes through the block and re-emerges from the opposite side into air at what angle to the normal to that surface?

Accepted Answer

A) 42$\degree$ 
B) 23$\degree$ 
C) 30$\degree$ 
D) 59$\degree$ 
A) 42$\degree$ 
B) 23$\degree$ 
C) 30$\degree$ 
D) 59$\degree$

Question 11

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 12

According to the photon energy formula, tripling the frequency 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 13

Of the values listed below, which is the greatest possible value for the index of refraction?

Accepted Answer

A) 1.5 
B)    
C) 2.0 
D) 2.4 
A) 1.5 
B)    
C) 2.0 
D) 2.4

Question 14

As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches what value?

Accepted Answer

A) zero 
B) 45$\degree$ 
C) 90$\degree$ 
D) 180$\degree$ 
A) zero 
B) 45$\degree$ 
C) 90$\degree$ 
D) 180$\degree$

Question 15

Light of colors 1 and 2 are sent through a prism and the rays of light of color 2 bend more.Which of the following is not true?

Accepted Answer

A) The index of refraction for color 2 is greater than that for color 1. 
B) The two colors of light have different frequencies associated with them. 
C) The speed of light for color 2 is greater than that for color 1 in this prism. 
D) The wavelength for color 1 is different than that for color 2 in this prism. 
A) The index of refraction for color 2 is greater than that for color 1. 
B) The two colors of light have different frequencies associated with them. 
C) The speed of light for color 2 is greater than that for color 1 in this prism. 
D) The wavelength for color 1 is different than that for color 2 in this prism.

Question 16

The lowest possible value for the index of refraction is:

Accepted Answer

A) 0. 
B) 1. 
C) 0.707. 
D) 3-1/2. 
A) 0. 
B) 1. 
C) 0.707. 
D) 3-1/2.

Question 17

A light ray incident on the interface between air and glass can undergo total internal reflection:

Accepted Answer

A) only in the glass. 
B) only in the air. 
C) in either the glass or the air. 
D) in the air only if the index of refraction of the glass is greater than the   . 
A) only in the glass. 
B) only in the air. 
C) in either the glass or the air. 
D) in the air only if the index of refraction of the glass is greater than the   .

Question 18

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 19

Three flat layers of transparent material are stacked upon one another.The top layer has index of refraction n1, the middle has n2 and the bottom one has n3.If n1 2 3, at what angle of incidence will a ray of light traverse the three layers in a single straight line?

Accepted Answer

A)    
B)    
C)    
D) There is such an angle, but it is not given. 
A)    
B)    
C)    
D) There is such an angle, but it is not given.

Question 20

A rainbow is a result of:

Accepted Answer

A) different color droplets of water. 
B) dispersion. 
C) interference. 
D) the Huygens Effect. 
A) different color droplets of water. 
B) dispersion. 
C) interference. 
D) the Huygens Effect.

Exam 22: Reflection and Refraction of Light

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

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.

A ray of white light, incident upon a glass prism, is dispersed into its various color components.Which one of the following colors experiences the greatest angle of deviation?

A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.49).If the velocity of the beam before it enters the plastic is 3.00 * 108 m/s, what is its velocity inside the block?

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

A ray of light travels from a glass-to-liquid interface at an angle of 35.0 °\degree° .Indices of refraction for the glass and liquid are, respectively, 1.52 and 1.63.What is the angle of refraction for the ray moving through the liquid?

A container of flint glass (n = 1.66) holds a small quantity of benzene (n = 1.501). What is the critical angle for internal reflection of a ray in the glass when it is incident on the glass-to-liquid surface?

The photoelectric effect was discovered by:

Monochromatic light hits a piece of glass.What happens to the wavelength in the glass as the index of refraction increases?

A beam of light in air is incident at an angle of 30 °\degree° to the surface of a rectangular block of clear plastic (n = 1.46).The light beam first passes through the block and re-emerges from the opposite side into air at what angle to the normal to that 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?

According to the photon energy formula, tripling the frequency of the radiation from a monochromatic source will change the energy content of the individually radiated photons by what factor?

Of the values listed below, which is the greatest possible value for the index of refraction?

As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches what value?

Light of colors 1 and 2 are sent through a prism and the rays of light of color 2 bend more.Which of the following is not true?

The lowest possible value for the index of refraction is:

A light ray incident on the interface between air and glass can undergo total internal reflection:

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

Three flat layers of transparent material are stacked upon one another.The top layer has index of refraction n1, the middle has n2 and the bottom one has n3.If n1 < n2 < n3, at what angle of incidence will a ray of light traverse the three layers in a single straight line?

A rainbow is a result of:

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

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.

A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.49).If the velocity of the beam before it enters the plastic is 3.00 * 10⁸ m/s, what is its velocity inside the block?

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

A ray of light travels from a glass-to-liquid interface at an angle of 35.0 $\degree$ .Indices of refraction for the glass and liquid are, respectively, 1.52 and 1.63.What is the angle of refraction for the ray moving through the liquid?

A beam of light in air is incident at an angle of 30 $\degree$ to the surface of a rectangular block of clear plastic (n = 1.46).The light beam first passes through the block and re-emerges from the opposite side into air at what angle to the normal to that surface?

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

Three flat layers of transparent material are stacked upon one another.The top layer has index of refraction n₁, the middle has n₂ and the bottom one has n₃.If n₁ < n₂ < n₃, at what angle of incidence will a ray of light traverse the three layers in a single straight line?