Question 1

In a Young's double-slit interference apparatus,the distance from the slits to the screen is tripled.The distance between adjacent light and dark fringes changes by a factor of:

Accepted Answer

A)  1/9. 
B)  1/3. 
C)  1. 
D)  3. 
E)  ​9. 
A)  1/9. 
B)  1/3. 
C)  1. 
D)  3. 
E)  ​9.

Question 2

Light travels from outside a building to inside through a pane of glass.Which of the following is true regarding the phase change upon reflection in the case?

Accepted Answer

A)  No phase change occurs at either the inside surface or the outside surface of the glass. 
B)  A 180o phase change occurs at both the inside surface and the outside surface. 
C)  A 180o phase change occurs at the inside surface but not at the outside surface. 
D)  A 180o phase change occurs at the outside surface but not at the inside surface. 
A)  No phase change occurs at either the inside surface or the outside surface of the glass. 
B)  A 180o phase change occurs at both the inside surface and the outside surface. 
C)  A 180o phase change occurs at the inside surface but not at the outside surface. 
D)  A 180o phase change occurs at the outside surface but not at the inside surface.

Question 3

A silicon monoxide (n = 1.45)film of 288.9 nm thickness is used to coat a glass camera lens (n = 1.56).What wavelength of light in the visible region (390 to 710 nm)will be most efficiently transmitted by this system? (1 nm = 10−9 m)

Accepted Answer

A)  419 nm 
B)  447 nm 
C)  559 nm 
D)  473 nm 
E)  ​660 nm 
A)  419 nm 
B)  447 nm 
C)  559 nm 
D)  473 nm 
E)  ​660 nm

Question 4

If the 4th order fringe in Young's double-slit experiment occurs at an angle of 53.5°,what is the relationship between the wavelength λ and the distance between slits,d?

Accepted Answer

A)  d = 3.21 λ 
B)  d = 19.9 λ 
C)  d = 4.98 λ 
D)  d = 6.33 λ 
E)  ​d = 0.20 λ 
A)  d = 3.21 λ 
B)  d = 19.9 λ 
C)  d = 4.98 λ 
D)  d = 6.33 λ 
E)  ​d = 0.20 λ

Question 5

Polarization of light can be achieved using a dichroic material like Polaroid by which of the following processes?

Accepted Answer

A)  reflection 
B)  double refraction 
C)  selective absorption 
D)  scattering 
A)  reflection 
B)  double refraction 
C)  selective absorption 
D)  scattering

Question 6

Dielectric mirrors are made to have extremely high reflectance

Accepted Answer

A)  by stacking thin layers of a single dielectric material on a glass backing so that the reflections from the surfaces of the layers undergoconstructive interference. 
B)  by stacking thin layers of a single dielectric material on a glass backing so that the reflections from the surfaces of the layers undergo destructive interference. 
C)  by stacking thin layers of different dielectric materials on a glass backing so that the reflections from the surfaces of the layers undergo constructive interference. 
D)  by stacking thin layers of different dielectric materials on a glass backing so that the reflections from the surfaces of the layers undergo destructive interference. 
A)  by stacking thin layers of a single dielectric material on a glass backing so that the reflections from the surfaces of the layers undergoconstructive interference. 
B)  by stacking thin layers of a single dielectric material on a glass backing so that the reflections from the surfaces of the layers undergo destructive interference. 
C)  by stacking thin layers of different dielectric materials on a glass backing so that the reflections from the surfaces of the layers undergo constructive interference. 
D)  by stacking thin layers of different dielectric materials on a glass backing so that the reflections from the surfaces of the layers undergo destructive interference.

Question 7

A material is optically active if it:

Accepted Answer

A)  absorbs light passing through it. 
B)  transmits all light passing through it. 
C)  exhibits interference. 
D)  rotates the plane of polarization of the light passing through it. 
A)  absorbs light passing through it. 
B)  transmits all light passing through it. 
C)  exhibits interference. 
D)  rotates the plane of polarization of the light passing through it.

Question 8

A Fraunhofer diffraction pattern is created by monochromatic light shining through which of the following?

Accepted Answer

A)  single slit 
B)  double slit 
C)  triple slit 
D)  more than 3 slits 
A)  single slit 
B)  double slit 
C)  triple slit 
D)  more than 3 slits

Question 9

Two thin layers of material with different indices of refraction are coated on a glass plate.The outer first material has n1 = 1.240,the inner second material has n2 = 1.550,and the glass has nglass = 1.62.If light is incident from air on the first layer,what is the phase change for light that reflects from the glass?

Accepted Answer

A)  180° 
B)  0° 
C)  360° 
D)  540° 
E)  ​720° 
A)  180° 
B)  0° 
C)  360° 
D)  540° 
E)  ​720°

Question 10

Two closely spaced parallel glass plates are separated by 850 nm.What wavelength light source in the visible region (390 nm to 710 nm)will experience maximum transmission through the two plates?

Accepted Answer

A)  425 nm 
B)  489 nm 
C)  422 nm 
D)  512 nm 
E)  ​474 nm 
A)  425 nm 
B)  489 nm 
C)  422 nm 
D)  512 nm 
E)  ​474 nm

Question 11

In a Young's double-slit interference apparatus,by what factor is the distance between adjacent light and dark fringes changed when the separation between slits is quadrupled?

Accepted Answer

A)  1/16 
B)  1/4 
C)  1 
D)  4 
E)  ​16 
A)  1/16 
B)  1/4 
C)  1 
D)  4 
E)  ​16

Question 12

Unpolarized light of intensity I0 passes through two sheets of ideal polarizing material.If the transmitted intensity is 0.33 I0,what is the angle between the polarizer and the analyzer?

Accepted Answer

A)  55° 
B)  36° 
C)  49° 
D)  71° 
E)  ​0.62° 
A)  55° 
B)  36° 
C)  49° 
D)  71° 
E)  ​0.62°

Question 13

Light of wavelength 684 nm shines on a soap bubble film (n = 1.46).For what soap film thickness,other than the minimum thickness,will constructive interference occur?

Accepted Answer

A)  117 nm 
B)  468 nm 
C)  1248 nm 
D)  586 nm 
E)  ​1171 nm 
A)  117 nm 
B)  468 nm 
C)  1248 nm 
D)  586 nm 
E)  ​1171 nm

Question 14

At what angle will the highest order maximum appear for a wavelength 470 nm using a grating with 459 lines per mm?

Accepted Answer

A)  40° 
B)  60° 
C)  1.04° 
D)  63° 
E)  ​90° 
A)  40° 
B)  60° 
C)  1.04° 
D)  63° 
E)  ​90°

Question 15

A silicon monoxide (n = 1.45)film of 101.7 nm thickness is used to coat a glass camera lens (n = 1.56).What wavelength of light in the visible region (390 to 710 nm)will be most efficiently transmitted by this system? (1 nm = 10−9 m)

Accepted Answer

A)  472 nm 
B)  697 nm 
C)  649 nm 
D)  590 nm 
E)  ​413 nm 
A)  472 nm 
B)  697 nm 
C)  649 nm 
D)  590 nm 
E)  ​413 nm

Question 16

What is the highest order maximum for wavelength 429 nm that can be obtained with a grating with 396 lines per mm?

Accepted Answer

A)  5 
B)  11 
C)  6 
D)  34 
E)  ​4 
A)  5 
B)  11 
C)  6 
D)  34 
E)  ​4

Question 17

Unpolarized light is passed through polarizer 1.The light then goes though polarizer 2 with its plane of polarization at 39.8° to that of polarizer 1.Polarizer 3 is placed after polarizer 2.Polarizer 3 has its plane of polarization at 30.8° to the plane of polarization of polarizer 2 and at 70.6° to that of polarizer 1.What fraction of the intensity of the original light gets though the last polarizer?

Accepted Answer

A)  0.436 
B)  0.664 
C)  0.332 
D)  0.218 
E)  ​0.085 
A)  0.436 
B)  0.664 
C)  0.332 
D)  0.218 
E)  ​0.085

Question 18

In a Young's double-slit interference apparatus,by what factor is the distance between adjacent light and dark fringes changed when the wavelength of the source is quadrupled?

Accepted Answer

A)  1/16 
B)  1/4 
C)  1 
D)  4 
E)  ​16 
A)  1/16 
B)  1/4 
C)  1 
D)  4 
E)  ​16

Question 19

What wavelength monochromatic source in the visible region (390 to 710 nm)can be used to constructively reflect off a soap film (n = 1.46)if the film is 222 nm thick?

Accepted Answer

A)  432 nm 
B)  410 nm 
C)  473 nm 
D)  482 nm 
E)  ​436 nm 
A)  432 nm 
B)  410 nm 
C)  473 nm 
D)  482 nm 
E)  ​436 nm

Question 20

LCD stands for:

Accepted Answer

A)  linearly collimated diffraction. 
B)  longitudinally combined depolarization. 
C)  liquid crystal display. 
D)  lighted compact disk. 
A)  linearly collimated diffraction. 
B)  longitudinally combined depolarization. 
C)  liquid crystal display. 
D)  lighted compact disk.

Exam 24: Wave Optics

In a Young's double-slit interference apparatus,the distance from the slits to the screen is tripled.The distance between adjacent light and dark fringes changes by a factor of:

Light travels from outside a building to inside through a pane of glass.Which of the following is true regarding the phase change upon reflection in the case?

A silicon monoxide (n = 1.45)film of 288.9 nm thickness is used to coat a glass camera lens (n = 1.56).What wavelength of light in the visible region (390 to 710 nm)will be most efficiently transmitted by this system? (1 nm = 10−9 m)

If the 4th order fringe in Young's double-slit experiment occurs at an angle of 53.5°,what is the relationship between the wavelength λ and the distance between slits,d?

Polarization of light can be achieved using a dichroic material like Polaroid by which of the following processes?

Dielectric mirrors are made to have extremely high reflectance

A material is optically active if it:

A Fraunhofer diffraction pattern is created by monochromatic light shining through which of the following?

Two closely spaced parallel glass plates are separated by 850 nm.What wavelength light source in the visible region (390 nm to 710 nm)will experience maximum transmission through the two plates?

In a Young's double-slit interference apparatus,by what factor is the distance between adjacent light and dark fringes changed when the separation between slits is quadrupled?

Unpolarized light of intensity I0 passes through two sheets of ideal polarizing material.If the transmitted intensity is 0.33 I0,what is the angle between the polarizer and the analyzer?

Light of wavelength 684 nm shines on a soap bubble film (n = 1.46).For what soap film thickness,other than the minimum thickness,will constructive interference occur?

At what angle will the highest order maximum appear for a wavelength 470 nm using a grating with 459 lines per mm?

A silicon monoxide (n = 1.45)film of 101.7 nm thickness is used to coat a glass camera lens (n = 1.56).What wavelength of light in the visible region (390 to 710 nm)will be most efficiently transmitted by this system? (1 nm = 10−9 m)

What is the highest order maximum for wavelength 429 nm that can be obtained with a grating with 396 lines per mm?

In a Young's double-slit interference apparatus,by what factor is the distance between adjacent light and dark fringes changed when the wavelength of the source is quadrupled?

What wavelength monochromatic source in the visible region (390 to 710 nm)can be used to constructively reflect off a soap film (n = 1.46)if the film is 222 nm thick?

LCD stands for:

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

Particle Collisions, Mediating Photons, and Quark Structures: Exploring the Fundamentals of Physics

Filters

A silicon monoxide (n = 1.45)film of 288.9 nm thickness is used to coat a glass camera lens (n = 1.56).What wavelength of light in the visible region (390 to 710 nm)will be most efficiently transmitted by this system? (1 nm = 10−⁹ m)

Unpolarized light of intensity I₀ passes through two sheets of ideal polarizing material.If the transmitted intensity is 0.33 I₀,what is the angle between the polarizer and the analyzer?

A silicon monoxide (n = 1.45)film of 101.7 nm thickness is used to coat a glass camera lens (n = 1.56).What wavelength of light in the visible region (390 to 710 nm)will be most efficiently transmitted by this system? (1 nm = 10−⁹ m)