23. A laser shines monochromatic 650 nm red light (nm = 10^-9 m) at a double slit with separation 0.024 mm and produces an interference pattern on a screen 5.60 m from the slits, as shown. How far is the center of the first dark fringe from the center of the central bright fringe? The slit separation is greatly exaggerated in the diagram. A. 7.6 mm B. 1.4 mm C. 7.6 cm D. 4.3 mm
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Khoobchandra A.
Light that has a 650 -nm wavelength is incident upon two narrow slits that are separated by $0.500 \mathrm{~mm}$. An interference pattern from the slits is projected onto a screen that is $3.00 \mathrm{~m}$ away. (a) What is the separation distance on the screen of the first bright fringe from the central bright fringe? (b) What is the separation distance on the screen of the second dark fringe from the central bright fringe? Example 23-7
Problem 3.4: (10 points) Coherent light with wavelength 609 nm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 m from the slits. The first-order bright fringe is a distance of 4.84 mm from the center of the central bright fringe. a) Find the separation distance between the slits b) For what wavelength of light will the first-order dark fringe (the first dark fringe next to a central maximum) be observed at this same point on the screen?
Adi S.
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