Question 1

If the 5th-order fringe in Young's double-slit experiment occurs at an angle of 38.7°,what is the relationship between the wavelength λ and the distance between slits,d?

Accepted Answer

A)  d = 3.12λ
B)  d = 40.00λ
C)  d = 8.00λ
D)  d = 10.30λ
E)  d = 0.12λF) A) and C)
G) B) and E)

Question 2

LCD stands for:

Accepted Answer

A)  linearly collimated diffraction.
B)  longitudinally combined depolarization.
C)  liquid crystal display.
D)  lighted compact disk.E) All of the above
F) C) and D)

Question 3

Sunlight reflected from a smooth ice surface is completely polarized.Determine the angle of incidence.(nice = 1.309)

Accepted Answer

A)  25.60°
B)  47.89°
C)  52.62°
D)  56.26°E) B) and D)
F) C) and D)

Question 4

The dark spot observed in the center of a Newton's rings pattern is attributed to which of the following?

Accepted Answer

A)  polarization of light when reflected
B)  polarization of light when refracted
C)  phase shift of light when reflected
D)  phase shift of light when refractedE) B) and C)
F) All of the above

Question 5

Helium-neon laser light (λ = 632.8 nm) is sent through a single slit of width 0.55 mm.What is the width of the central maximum on a screen 1.4 m in back of the slit? (1 nm = 10−9 m)

Accepted Answer

A)  1.6E-3 m
B)  8.0E-4 m
C)  3.2E-3 m
D)  7.5E-5 m
E)  1.5E-4 mF) A) and B)
G) None of the above

Question 6

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

Accepted Answer

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

Question 7

At what angle will the highest-order maximum appear for a wavelength of 412 nm using a grating with 435 lines per mm?

Accepted Answer

A)  46°
B)  64°
C)  1.1°
D)  68°
E)  90°F) D) and E)
G) C) and D)

Question 8

That all points on a wave front act as new sources of spherical waves is attributed to:

Accepted Answer

A)  Maxwell.
B)  Young.
C)  Thomas.
D)  Huygens.E) None of the above
F) A) and B)

Question 9

The intensity of unpolarized light passing through a single sheet of polarizing material changes by a factor of:

Accepted Answer

A)  1.
B)  0.5.
C)  cos θ.
D)  cos2 θ.E) C) and D)
F) B) and D)

Question 10

A beam of unpolarized light in air strikes a flat piece of glass at an angle of incidence of 50.6°.If the reflected beam is completely polarized,what is the index of refraction of the glass?

Accepted Answer

A)  1.48
B)  1.22
C)  1.57
D)  1.16
E)  ​1.78F) None of the above
G) A) and B)

Question 11

If a wave from one slit of a Young's double-slit set-up arrives at a point on the screen one wavelength behind the wave from the other slit,what is observed at that point?

Accepted Answer

A)  dark fringe
B)  bright fringe
C)  multi-colored fringe
D)  gray fringe,neither dark nor brightE) B) and D)
F) B) and C)

Question 12

How far above the horizon is the Moon when its image reflected in calm water is completely polarized? (nwater = 1.333)

Accepted Answer

A)  53.12°
B)  18.44°
C)  22.20°
D)  36.88°E) B) and D)
F) C) and D)

Question 13

Light of wavelength 420 nm is incident on a slit of width 0.20 mm,and a diffraction pattern is produced on a screen that is 1.80 m from the slit.What is the width of the central bright fringe? (1 nm = 10−9 m)

Accepted Answer

A)  3.8E-3 m
B)  7.6E-3 m
C)  1.2E-3 m
D)  1.4E-2 m
E)  2.0E-2 mF) D) and E)
G) C) and E)

Question 14

A silicon monoxide thin film (n = 1.45) of thickness 73.9 nm is applied to a camera lens made of glass (n = 1.55) .This will result in destructive interference for reflected light of what wavelength?

Accepted Answer

A)  571 nm
B)  343 nm
C)  429 nm
D)  311 nm
E)  536 nmF) B) and D)
G) D) and E)

Question 15

In a Young's experiment,the paths from the slits to a point on the screen differ in length causing constructive interference at the point.Which of the following path differences would cause this constructive interference?

Accepted Answer

A)  5λ/2
B)  3λ/4
C)  4λ
D)  None of the above.E) A) and D)
F) A) and C)

Question 16

When light shines on a lens placed on a flat piece of glass,interference occurs which causes circular fringes called Newton's rings.The two beams that are interfering come:

Accepted Answer

A)  from the top and bottom surface of the lens.
B)  from the top surface of the lens and the top surface of the piece of glass.
C)  from the bottom surface of the lens and the top surface of the piece of glass.
D)  from the top and bottom surface of the flat piece of glass.E) B) and D)
F) None of the above

Question 17

A Young's double slit has a slit separation of 1.65 × 10−5 m on which a monochromatic light beam is directed.The resultant bright fringes on a screen 1.10 m from the double slit are separated by 2.25 × 10−2 m.What is the wavelength of this beam? (1 nm = 10−9 m)

Accepted Answer

A)  6.90 nm
B)  205 nm
C)  337 nm
D)  338 nm
E)  408 nmF) A) and B)
G) A) and C)

Question 18

A Young's interference experiment is conducted with violet argon laser light (λ = 409 nm) .The separation between the slits is 0.66 mm,and the interference pattern appears on a screen 3.8 m away.What is the spacing between the bright fringes? (1 nm = 10−9 m)

Accepted Answer

A)  1.5E-3 m
B)  2.4E-3 m
C)  1.5E+4 m
D)  4.7E-3 m
E)  1.6E-3 mF) A) and E)
G) A) and D)

Question 19

Two flat glass plates are in contact along one end and are separated by a sheet of paper 3.3 × 10−6 m thick at the other end.The top plate is illuminated by a monochromatic light source of wavelength 514 nm.How many dark parallel bands will be evident across the top plate? (1 nm = 10−9 m)

Accepted Answer

A)  7
B)  11
C)  6
D)  13
E)  9F) A) and D)
G) None of the above

Question 20

Two thin layers of material with different indices of refraction are coated on a glass plate.The outer first material has n1 = 1.461,the inner second material has n2 = 1.544,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°F) A) and E)
G) C) and D)

Exam 24: Wave Optics

A beam of unpolarized light in air strikes a flat piece of glass at an angle of incidence of 50.6°.If the reflected beam is completely polarized,what is the index of refraction of the glass?

Correct Answer
verified

A Young's interference experiment is conducted with violet argon laser light (λ = 409 nm) .The separation between the slits is 0.66 mm,and the interference pattern appears on a screen 3.8 m away.What is the spacing between the bright fringes? (1 nm = 10−⁹ m)

Correct Answer
verified

A silicon monoxide thin film (n = 1.45) of thickness 73.9 nm is applied to a camera lens made of glass (n = 1.55) .This will result in destructive interference for reflected light of what wavelength?

Correct Answer
verified

The dark spot observed in the center of a Newton's rings pattern is attributed to which of the following?

Correct Answer
verified

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

Correct Answer
verified

If the 5th-order fringe in Young's double-slit experiment occurs at an angle of 38.7°,what is the relationship between the wavelength λ and the distance between slits,d?

Correct Answer
verified

In a Young's experiment,the paths from the slits to a point on the screen differ in length causing constructive interference at the point.Which of the following path differences would cause this constructive interference?

Correct Answer
verified

Sunlight reflected from a smooth ice surface is completely polarized.Determine the angle of incidence.(n_ice = 1.309)

Correct Answer
verified

A Young's double slit has a slit separation of 1.65 × 10−⁵ m on which a monochromatic light beam is directed.The resultant bright fringes on a screen 1.10 m from the double slit are separated by 2.25 × 10−² m.What is the wavelength of this beam? (1 nm = 10−⁹ m)

Correct Answer
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If a wave from one slit of a Young's double-slit set-up arrives at a point on the screen one wavelength behind the wave from the other slit,what is observed at that point?

Correct Answer
verified

How far above the horizon is the Moon when its image reflected in calm water is completely polarized? (n_water = 1.333)

Correct Answer
verified

That all points on a wave front act as new sources of spherical waves is attributed to:

Correct Answer
verified

When light shines on a lens placed on a flat piece of glass,interference occurs which causes circular fringes called Newton's rings.The two beams that are interfering come:

Correct Answer
verified

LCD stands for:

Correct Answer
verified

The intensity of unpolarized light passing through a single sheet of polarizing material changes by a factor of:

Correct Answer
verified

Correct Answer
verified

Helium-neon laser light (λ = 632.8 nm) is sent through a single slit of width 0.55 mm.What is the width of the central maximum on a screen 1.4 m in back of the slit? (1 nm = 10−⁹ m)

Correct Answer
verified

Two flat glass plates are in contact along one end and are separated by a sheet of paper 3.3 × 10−⁶ m thick at the other end.The top plate is illuminated by a monochromatic light source of wavelength 514 nm.How many dark parallel bands will be evident across the top plate? (1 nm = 10−⁹ m)

Correct Answer
verified

At what angle will the highest-order maximum appear for a wavelength of 412 nm using a grating with 435 lines per mm?

Correct Answer
verified

Light of wavelength 420 nm is incident on a slit of width 0.20 mm,and a diffraction pattern is produced on a screen that is 1.80 m from the slit.What is the width of the central bright fringe? (1 nm = 10−⁹ m)

Correct Answer
verified

Exam 24: Wave Optics

A beam of unpolarized light in air strikes a flat piece of glass at an angle of incidence of 50.6°.If the reflected beam is completely polarized,what is the index of refraction of the glass?

Correct AnswerverifiedShow Answer

A Young's interference experiment is conducted with violet argon laser light (λ = 409 nm) .The separation between the slits is 0.66 mm,and the interference pattern appears on a screen 3.8 m away.What is the spacing between the bright fringes? (1 nm = 10−9 m)

Correct AnswerverifiedShow Answer

A silicon monoxide thin film (n = 1.45) of thickness 73.9 nm is applied to a camera lens made of glass (n = 1.55) .This will result in destructive interference for reflected light of what wavelength?

Correct AnswerverifiedShow Answer

The dark spot observed in the center of a Newton's rings pattern is attributed to which of the following?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If the 5th-order fringe in Young's double-slit experiment occurs at an angle of 38.7°,what is the relationship between the wavelength λ and the distance between slits,d?

Correct AnswerverifiedShow Answer

In a Young's experiment,the paths from the slits to a point on the screen differ in length causing constructive interference at the point.Which of the following path differences would cause this constructive interference?

Correct AnswerverifiedShow Answer

Sunlight reflected from a smooth ice surface is completely polarized.Determine the angle of incidence.(nice = 1.309)

Correct AnswerverifiedShow Answer

A Young's double slit has a slit separation of 1.65 × 10−5 m on which a monochromatic light beam is directed.The resultant bright fringes on a screen 1.10 m from the double slit are separated by 2.25 × 10−2 m.What is the wavelength of this beam? (1 nm = 10−9 m)

Correct AnswerverifiedShow Answer

If a wave from one slit of a Young's double-slit set-up arrives at a point on the screen one wavelength behind the wave from the other slit,what is observed at that point?

Correct AnswerverifiedShow Answer

How far above the horizon is the Moon when its image reflected in calm water is completely polarized? (nwater = 1.333)

Correct AnswerverifiedShow Answer

That all points on a wave front act as new sources of spherical waves is attributed to:

Correct AnswerverifiedShow Answer

When light shines on a lens placed on a flat piece of glass,interference occurs which causes circular fringes called Newton's rings.The two beams that are interfering come:

Correct AnswerverifiedShow Answer

LCD stands for:

Correct AnswerverifiedShow Answer

The intensity of unpolarized light passing through a single sheet of polarizing material changes by a factor of:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Helium-neon laser light (λ = 632.8 nm) is sent through a single slit of width 0.55 mm.What is the width of the central maximum on a screen 1.4 m in back of the slit? (1 nm = 10−9 m)

Correct AnswerverifiedShow Answer

Two flat glass plates are in contact along one end and are separated by a sheet of paper 3.3 × 10−6 m thick at the other end.The top plate is illuminated by a monochromatic light source of wavelength 514 nm.How many dark parallel bands will be evident across the top plate? (1 nm = 10−9 m)

Correct AnswerverifiedShow Answer

At what angle will the highest-order maximum appear for a wavelength of 412 nm using a grating with 435 lines per mm?

Correct AnswerverifiedShow Answer

Light of wavelength 420 nm is incident on a slit of width 0.20 mm,and a diffraction pattern is produced on a screen that is 1.80 m from the slit.What is the width of the central bright fringe? (1 nm = 10−9 m)

Correct AnswerverifiedShow Answer

Correct Answer
verified

A Young's interference experiment is conducted with violet argon laser light (λ = 409 nm) .The separation between the slits is 0.66 mm,and the interference pattern appears on a screen 3.8 m away.What is the spacing between the bright fringes? (1 nm = 10−⁹ m)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Sunlight reflected from a smooth ice surface is completely polarized.Determine the angle of incidence.(n_ice = 1.309)

Correct Answer
verified

A Young's double slit has a slit separation of 1.65 × 10−⁵ m on which a monochromatic light beam is directed.The resultant bright fringes on a screen 1.10 m from the double slit are separated by 2.25 × 10−² m.What is the wavelength of this beam? (1 nm = 10−⁹ m)

Correct Answer
verified

Correct Answer
verified

How far above the horizon is the Moon when its image reflected in calm water is completely polarized? (n_water = 1.333)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Helium-neon laser light (λ = 632.8 nm) is sent through a single slit of width 0.55 mm.What is the width of the central maximum on a screen 1.4 m in back of the slit? (1 nm = 10−⁹ m)

Correct Answer
verified

Two flat glass plates are in contact along one end and are separated by a sheet of paper 3.3 × 10−⁶ m thick at the other end.The top plate is illuminated by a monochromatic light source of wavelength 514 nm.How many dark parallel bands will be evident across the top plate? (1 nm = 10−⁹ m)

Correct Answer
verified

Correct Answer
verified

Light of wavelength 420 nm is incident on a slit of width 0.20 mm,and a diffraction pattern is produced on a screen that is 1.80 m from the slit.What is the width of the central bright fringe? (1 nm = 10−⁹ m)

Correct Answer
verified