Question 1

Before light can undergo total internal reflection when incident on material 2 from material 1,what must be true of the indices of refraction?

Accepted Answer

A) n1 = n2 
B) n1 2 
C) n1 > n2 
D) Either n1 or n2 must be equal to 1. 
A) n1 = n2 
B) n1 2 
C) n1 > n2 
D) Either n1 or n2 must be equal to 1.

Question 2

Huygens's wave theory requires which of the following with regard to the relative speeds of light in glass and in air?

Accepted Answer

A) Speed in air is greater than in glass. 
B) Speed in air is less than in glass. 
C) Speed in air equals that in glass. 
D) Speed in glass equals square root of that in air. 
A) Speed in air is greater than in glass. 
B) Speed in air is less than in glass. 
C) Speed in air equals that in glass. 
D) Speed in glass equals square root of that in air.

Question 3

A small underwater pool light is 1 m below the surface of a swimming pool.What is the radius of the circle of light on the surface,from which light emerges from the water? (nwater = 1.333).

Accepted Answer

A) 0.57 m 
B) 0.77 m 
C) 1.13 m 
D) 1.43 m 
A) 0.57 m 
B) 0.77 m 
C) 1.13 m 
D) 1.43 m

Question 4

Dez pours carbon tetrachloride (n = 1.46)into a container made of crown glass (n = 1.52).The light ray in glass incident on the glass-to-liquid boundary makes an angle of 30 $\degree$with the normal.Find the angle of the corresponding refracted ray.

Accepted Answer

A) 55.5 $\degree$ 
B) 29.4 $\degree$ 
C) 31.4 $\degree$ 
D) 19.2 $\degree$ 
A) 55.5 $\degree$ 
B) 29.4 $\degree$ 
C) 31.4 $\degree$ 
D) 19.2 $\degree$

Question 5

A beam of light is incident upon a flat piece of glass (n = 1.50)at an angle of incidence of 45 $\degree$.Part of the beam is transmitted and part is reflected.What is the angle between the reflected and transmitted rays?

Accepted Answer

A) 28 $\degree$ 
B) 73 $\degree$ 
C) 107 $\degree$ 
D) 152 $\degree$ 
A) 28 $\degree$ 
B) 73 $\degree$ 
C) 107 $\degree$ 
D) 152 $\degree$

Question 6

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.

Question 7

As a monochromatic light ray is transmitted through an air-to-glass boundary,what happens to the wavelength?

Accepted Answer

A) increases 
B) decreases 
C) remains unchanged 
D) approaches zero value 
A) increases 
B) decreases 
C) remains unchanged 
D) approaches zero value

Question 8

In Huygens's construction,all points on a wave front:

Accepted Answer

A) act as point sources for the production of secondary spherical waves. 
B) act as particles. 
C) demonstrate the dual nature of light. 
D) must be sources of plane waves. 
A) act as point sources for the production of secondary spherical waves. 
B) act as particles. 
C) demonstrate the dual nature of light. 
D) must be sources of plane waves.

Question 9

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 10

What is the angle of incidence on an air-to-glass boundary if the angle of refraction in the glass (n = 1.52)is 25 $\degree$?

Accepted Answer

A) 16 $\degree$ 
B) 25 $\degree$ 
C) 40 $\degree$ 
D) 43 $\degree$ 
A) 16 $\degree$ 
B) 25 $\degree$ 
C) 40 $\degree$ 
D) 43 $\degree$

Question 11

When light from air hits a smooth piece of glass with the ray perpendicular to the glass surface,the part of the light passing into the glass:

Accepted Answer

A) will not change its speed. 
B) will not change its frequency. 
C) will not change its wavelength. 
D) will not change its intensity. 
A) will not change its speed. 
B) will not change its frequency. 
C) will not change its wavelength. 
D) will not change its intensity.

Question 12

Three flat layers of transparent material are stacked upon one another.The top layer has index of refraction n1,the middle n2 and the bottom one n3.If n1 > n2 > n3,and a ray of light in air strikes the top layer,at which surface given can total internal reflection occur first?

Accepted Answer

A) the top surface 
B) the surface between materials with indices n1 and n2 
C) the surface between materials with indices n2 and n3 
D) Total internal reflection cannot occur at any of these surfaces. 
A) the top surface 
B) the surface between materials with indices n1 and n2 
C) the surface between materials with indices n2 and n3 
D) Total internal reflection cannot occur at any of these surfaces.

Question 13

Three slabs of different types of glass of uniform thickness are in contact with one another.The materials have indices of refraction   ,   ,and   where   and   .A beam of light starting in air is incident on the surface of material 1 at an angle of incidence of 35 $\degree$.The beam continues through material 1,material 2,and material 3,finally emerging into the air again.In which of materials 1,2,or 3,does the beam experience the smallest angle of refraction?

Accepted Answer

A) material 1 
B) material 2 
C) material 3 
D) This cannot be answered unless one knows the values of   ,   ,and   since the answer depends upon their relative ratios. 
A) material 1 
B) material 2 
C) material 3 
D) This cannot be answered unless one knows the values of   ,   ,and   since the answer depends upon their relative ratios.

Question 14

One phenomenon that demonstrates the wave nature of light is:

Accepted Answer

A) the photoelectric effect. 
B) quantization effects. 
C) absorption of light by an electron. 
D) interference effects. 
A) the photoelectric effect. 
B) quantization effects. 
C) absorption of light by an electron. 
D) interference effects.

Question 15

When viewing your image in a hand-held mirror,if you move the mirror away at a speed v,the image appears to:

Accepted Answer

A) also move away at v. 
B) move away at 2v. 
C) move away at v/2. 
D) not move. 
A) also move away at v. 
B) move away at 2v. 
C) move away at v/2. 
D) not move.

Question 16

A ray of light strikes a thick sheet of glass (n = 1.5)at an angle of 25 $\degree$ with the normal.Find the angle of the ray reflected off the glass surface with respect to the normal.

Accepted Answer

A) 56 $\degree$ 
B) 46 $\degree$ 
C) 39 $\degree$ 
D) 25 $\degree$ 
A) 56 $\degree$ 
B) 46 $\degree$ 
C) 39 $\degree$ 
D) 25 $\degree$

Question 17

When white light disperses as it passes through a prism,which of the following colors moves at the lowest speed in the prism?

Accepted Answer

A) blue 
B) green 
C) yellow 
D) red 
A) blue 
B) green 
C) yellow 
D) red

Question 18

White light is sent through a prism,and the various colors are separated in typical fashion.Which of the following colors would have the highest index of refraction in this prism?

Accepted Answer

A) red 
B) green 
C) yellow 
D) blue 
A) red 
B) green 
C) yellow 
D) blue

Question 19

If the speed of light through an unknown liquid is measured at 1.80 x 108 m/s,what is the index of refraction of this liquid? (c = 3.00 x 108 m/s)

Accepted Answer

A) 1.80 
B) 1.67 
C) 1.20 
D) 0.600 
A) 1.80 
B) 1.67 
C) 1.20 
D) 0.600

Question 20

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 $\degree$

Exam 22: Reflection and Refraction of Light

Before light can undergo total internal reflection when incident on material 2 from material 1,what must be true of the indices of refraction?

Huygens's wave theory requires which of the following with regard to the relative speeds of light in glass and in air?

A small underwater pool light is 1 m below the surface of a swimming pool.What is the radius of the circle of light on the surface,from which light emerges from the water? (nwater = 1.333).

Dez pours carbon tetrachloride (n = 1.46)into a container made of crown glass (n = 1.52).The light ray in glass incident on the glass-to-liquid boundary makes an angle of 30 °\degree° with the normal.Find the angle of the corresponding refracted ray.

A beam of light is incident upon a flat piece of glass (n = 1.50)at an angle of incidence of 45 °\degree° .Part of the beam is transmitted and part is reflected.What is the angle between the reflected and transmitted rays?

A rainbow is a result of:

As a monochromatic light ray is transmitted through an air-to-glass boundary,what happens to the wavelength?

In Huygens's construction,all points on a wave front:

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?

What is the angle of incidence on an air-to-glass boundary if the angle of refraction in the glass (n = 1.52)is 25 °\degree° ?

When light from air hits a smooth piece of glass with the ray perpendicular to the glass surface,the part of the light passing into the glass:

Three flat layers of transparent material are stacked upon one another.The top layer has index of refraction n1,the middle n2 and the bottom one n3.If n1 > n2 > n3,and a ray of light in air strikes the top layer,at which surface given can total internal reflection occur first?

One phenomenon that demonstrates the wave nature of light is:

When viewing your image in a hand-held mirror,if you move the mirror away at a speed v,the image appears to:

A ray of light strikes a thick sheet of glass (n = 1.5)at an angle of 25 °\degree° with the normal.Find the angle of the ray reflected off the glass surface with respect to the normal.

When white light disperses as it passes through a prism,which of the following colors moves at the lowest speed in the prism?

White light is sent through a prism,and the various colors are separated in typical fashion.Which of the following colors would have the highest index of refraction in this prism?

If the speed of light through an unknown liquid is measured at 1.80 x 108 m/s,what is the index of refraction of this liquid? (c = 3.00 x 108 m/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?

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 small underwater pool light is 1 m below the surface of a swimming pool.What is the radius of the circle of light on the surface,from which light emerges from the water? (n_water = 1.333).

Dez pours carbon tetrachloride (n = 1.46)into a container made of crown glass (n = 1.52).The light ray in glass incident on the glass-to-liquid boundary makes an angle of 30 $\degree$ with the normal.Find the angle of the corresponding refracted ray.

A beam of light is incident upon a flat piece of glass (n = 1.50)at an angle of incidence of 45 $\degree$ .Part of the beam is transmitted and part is reflected.What is the angle between the reflected and transmitted rays?

What is the angle of incidence on an air-to-glass boundary if the angle of refraction in the glass (n = 1.52)is 25 $\degree$ ?

Three flat layers of transparent material are stacked upon one another.The top layer has index of refraction n₁,the middle n₂ and the bottom one n₃.If n₁ > n₂ > n₃,and a ray of light in air strikes the top layer,at which surface given can total internal reflection occur first?

A ray of light strikes a thick sheet of glass (n = 1.5)at an angle of 25 $\degree$ with the normal.Find the angle of the ray reflected off the glass surface with respect to the normal.

If the speed of light through an unknown liquid is measured at 1.80 x 10⁸ m/s,what is the index of refraction of this liquid? (c = 3.00 x 10⁸ m/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?