In a double-slit experiment, the intensity of light at the center of the central fringe is measured to be 6.2 × 10-6 W/ m2. What is the intensity halfway between the center of the fringe and the first dark band?

A) 6.2 × 10-6 W/ m2 B) 3.1 × 10-6 W/ m2 C) 4.7 × 10-6 W/ m2 D) 1.6 × 10-6 W/ m2 E) 0.12 × 10-6 W/ m2 A) 6.2 × 10-6 W/ m2 B) 3.1 × 10-6 W/ m2 C) 4.7 × 10-6 W/ m2 D) 1.6 × 10-6 W/ m2 E) 0.12 × 10-6 W/ m2

Exam 34: The Wave Nature of Light; Interference

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Two flat glass plates, 10.0 cm wide, touch at one end but are separated by a thin wire at the other end, forming a wedge. Light with a wavelength of 450 nm shines almost perpendicularly on the glass and forms fringes which are 1.80 mm apart. What is the diameter of the wire?

(Multiple Choice)

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Question 21

A wave that travels from a medium of lower index of refraction to a medium of higher index of refraction undergoes 180° phase changes relative to the incident wave.

(True/False)

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Question 22

Two pieces of optically flat glass (n = 1.50) touch at one edge and a separated by a thin stretched fiber at the opposite edge. Light of wavelength 500 nm is shone from above and 100 dark fringes are counted. How thick is the fiber?

(Multiple Choice)

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Question 23

In the two-slit experiment, monochromatic light of wavelength 600 nm passes through a pair of slits separated by 2.20 x 10^-5 m. (a) What is the angle corresponding to the first bright fringe? (b) What is the angle corresponding to the second dark fringe?

(Short Answer)

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Question 24

According to Huygens' principle, each point on a wave can be considered as the source of a new wave that propagates from that point onward.

(True/False)

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Question 25

In a Young's double slit experiment, what is the ratio of the intensity at a point where the electric fields are out of phase by 30° to the central intensity.

(Multiple Choice)

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Question 26

In the two-slit experiment, for the condition of dark fringes, the value of m = +1 corresponds to a path difference of 3λ/2.

(True/False)

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Question 27

In a Newton's rings apparatus, the interference effect observed between the rays occurs because of the path difference between

(Multiple Choice)

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Question 28

In a double-slit experiment, the intensity of light at the center of the central fringe is measured to be 6.2 × 10^-6 W/ m². What is the intensity halfway between the center of the fringe and the first dark band?

(Multiple Choice)

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Question 29

Sources are coherent if

(Multiple Choice)

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Question 30

How far would the movable mirror in a Michelson interferometer need to be moved for 800 fringes to be counted using 633 nm light?

(Multiple Choice)

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Question 31

Two beams of coherent light travel different paths arriving at point P. If the maximum constructive interference is to occur at point P, what should be the phase difference between the two waves?

(Multiple Choice)

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Question 32

The interference pattern observed in Newton's rings experiment is because of the path difference between the top surface and the bottom surface of the air between the pieces of glass.

(True/False)

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Question 33

In the two-slit experiment, the distance between the slits and the screen is 1.1 m and the distance between the slits is 0.040 mm. If the first-order bright fringe is measured to be 3.4 cm from the centerline, what is the distance between the adjacent bright fringes?

(Multiple Choice)

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Question 34

The maximum intensity using coherent sources compared to the maximum intensity using random sources for sources of equal strength is that the maximum in the coherent case is

(Multiple Choice)

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Question 35

At the second maxima on either side of the central bright spot in a double-slit experiment, light from

(Multiple Choice)

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Question 36

If the movable mirror in a Michelson interferometer is moved 120 microns, how many fringes would be counted for 600 nm light?

(Multiple Choice)

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Question 37

Two light sources are said to be coherent if they

(Multiple Choice)

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Question 38

Light of wavelength 500 nm illuminates a soap film ( n = 1.33). What is the minimum thickness of film that will give an interference maximum when the light is incident normally on it?

(Multiple Choice)

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Question 39

Light from a 600 nm source goes through two slits 0.080 mm apart. What is the angular separation of the two first order maxima occurring on a screen 2.0 m from the slits?

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Question 40

Showing 21 - 40 of 77

Exam 34: The Wave Nature of Light; Interference

Two flat glass plates, 10.0 cm wide, touch at one end but are separated by a thin wire at the other end, forming a wedge. Light with a wavelength of 450 nm shines almost perpendicularly on the glass and forms fringes which are 1.80 mm apart. What is the diameter of the wire?

A wave that travels from a medium of lower index of refraction to a medium of higher index of refraction undergoes 180° phase changes relative to the incident wave.

Two pieces of optically flat glass (n = 1.50) touch at one edge and a separated by a thin stretched fiber at the opposite edge. Light of wavelength 500 nm is shone from above and 100 dark fringes are counted. How thick is the fiber?

In the two-slit experiment, monochromatic light of wavelength 600 nm passes through a pair of slits separated by 2.20 x 10-5 m. (a) What is the angle corresponding to the first bright fringe? (b) What is the angle corresponding to the second dark fringe?

According to Huygens' principle, each point on a wave can be considered as the source of a new wave that propagates from that point onward.

In a Young's double slit experiment, what is the ratio of the intensity at a point where the electric fields are out of phase by 30° to the central intensity.

In the two-slit experiment, for the condition of dark fringes, the value of m = +1 corresponds to a path difference of 3λ/2.

In a Newton's rings apparatus, the interference effect observed between the rays occurs because of the path difference between

In a double-slit experiment, the intensity of light at the center of the central fringe is measured to be 6.2 × 10-6 W/ m2. What is the intensity halfway between the center of the fringe and the first dark band?

Sources are coherent if

How far would the movable mirror in a Michelson interferometer need to be moved for 800 fringes to be counted using 633 nm light?

Two beams of coherent light travel different paths arriving at point P. If the maximum constructive interference is to occur at point P, what should be the phase difference between the two waves?

The interference pattern observed in Newton's rings experiment is because of the path difference between the top surface and the bottom surface of the air between the pieces of glass.

In the two-slit experiment, the distance between the slits and the screen is 1.1 m and the distance between the slits is 0.040 mm. If the first-order bright fringe is measured to be 3.4 cm from the centerline, what is the distance between the adjacent bright fringes?

The maximum intensity using coherent sources compared to the maximum intensity using random sources for sources of equal strength is that the maximum in the coherent case is

At the second maxima on either side of the central bright spot in a double-slit experiment, light from

If the movable mirror in a Michelson interferometer is moved 120 microns, how many fringes would be counted for 600 nm light?

Two light sources are said to be coherent if they

Light of wavelength 500 nm illuminates a soap film ( n = 1.33). What is the minimum thickness of film that will give an interference maximum when the light is incident normally on it?

Light from a 600 nm source goes through two slits 0.080 mm apart. What is the angular separation of the two first order maxima occurring on a screen 2.0 m from the slits?

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In the two-slit experiment, monochromatic light of wavelength 600 nm passes through a pair of slits separated by 2.20 x 10^-5 m. (a) What is the angle corresponding to the first bright fringe? (b) What is the angle corresponding to the second dark fringe?

In a double-slit experiment, the intensity of light at the center of the central fringe is measured to be 6.2 × 10^-6 W/ m². What is the intensity halfway between the center of the fringe and the first dark band?