1. A coherent light source is pointed at two parallel slits. The slits are 0.140 mm apart. Some of the light passes through the slits and forms an interference pattern on a screen. The screen is 5.23 meters from the slits. The wavelength of the light is 532 nm. (a) What is the path-length difference (in Hm) that corresponds to the third-order bright fringe on the screen? (This is the third fringe, not counting the central bright band.) (b) How far from the central maximum will be the second dark fringe?
1. A coherent light source is pointed at two parallel slits. The slits are 0.140 mm apart. Some of the light passes through the slits and forms an interference pattern on a screen. The screen is 5.23 meters from the slits. The wavelength of the light is 532 nm. (a) What is the path-length difference (in Hm) that corresponds to the third-order bright fringe on the screen? (This is the third fringe, not counting the central bright band.) (b) How far from the central maximum will be the second dark fringe?
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Transcribed Image Text:1. A coherent light source is pointed at two parallel slits.
The slits are 0.140 mm apart. Some of the light passes through
the slits and forms an interference pattern on a screen. The
screen is 5.23 meters from the slits. The wavelength of the
light is 532 nm. (a) What is the path-length difference (in µm)
that corresponds to the third-order bright fringe on the screen?
(This is the third fringe, not counting the central bright band.)
(b) How far from the central maximum will be the second dark
fringe?
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