A Young's interference experiment is conducted with blue-green argon laser light (l = 515 nm). The separation between the slits is 0.50 mm, and the interference pattern appears on a screen 4.95 m away. What is the spacing between the bright fringes? (1 nm = 10-9 m)
a. 3.4 mm
c. 1.7 mm
b. 5.1 mm
d. 6.8 mm
[Ques. 2] If the m = 2 fringe in Young's double-slit experiment occurs at an angle of 45.0, what is the relationship between the wavelength l and the distance between slits, d?
a. d = 2.00l
c. d = 1.41l
b. d = 2.83l
d. d = 4.00l
[Ques. 3] A light source simultaneously emits light of two wavelengths, 480 nm and 560 nm, respectively. The source is used in a double-slit interference experiment where the slit spacing is a 0.040 mm, and the distance between double slits and the screen is 1.6 m. What is the separation between the m = 3 bright fringes of the two wavelengths as they appear on the screen? (1 nm = 10-9 m)
a. 0.96 cm
c. 0.64 cm
b. 0.48 cm
d. 0.16 cm
[Ques. 4] A Young's double-slit apparatus is set up. The source wavelength is 430 nm, and the double-slit spacing is 0.040 mm. At what distance from the double slits should the screen be placed if the spacing between alternating bright fringes is to be 2.6 cm? (1 nm = 10-9 m)
a. 2.9 m
c. 2.2 m
b. 2.4 m
d. 1.6 m
[Ques. 5] A Young's double-slit apparatus is set up where a screen is positioned 0.80 m from the double slits. If the distance between alternating bright fringes is 0.83 cm, and the light source has a wavelength of 580 nm, what is the separation of the double slits? (1 nm = 10-9 m)
a. 6.0 10-5 m
c. 4.9 10-5 m
b. 2.8 10-5 m
d. 5.6 10-5 m
[Ques. 6] A Young's double-slit apparatus is set up. A screen is positioned 1.16 m from the double slits, and the spacing between the two slits is 0.0500 mm. The distance between alternating bright fringes is 1.42 cm. What is the light source wavelength? (1 nm = 10-9 m)
a. 612 nm
c. 490 nm
b. 280 nm
d. 355 nm
[Ques. 7] A Young's double-slit apparatus is set up so that a screen is positioned 1.6 m from the double slits, and the spacing between the two slits is 0.0315 mm. What is the distance between alternating bright fringes on the screen if the light source has a wavelength of 630 nm? (1 nm = 10-9 m)
a. 0.016 m
c. 0.025 m
b. 0.047 m
d. 0.032 m
[Ques. 8] 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 doubled?
a. 1/2
c. 1
b. 1/4
d. 2
[Ques. 9] 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:
a. 1/3.
c. 3.
b. 1.
d. 1/9.
[Ques. 10] 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 tripled?
a. 1/9
c. 3
b. 1
d. 1/3
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