Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.405 mm wide. The diffraction pattern is observed on a screen 3.30 m away. Define the width of a bright fringe as the distance between the minima on either side.
(a) What is the width of the central bright fringe?
mm
(b) What is the width of the first bright fringe on either side of
the central one?
mm
Wavelength of the light,
Width of the slits,
Distance of slits from Scree,
a). The first minimum is located at
Then distance of central bright fringe on one side of center is
Then width of central bright fringe on both sides of center will be
(ANS)
b). Width of 1st bright fringe on either side of central bright fringe is
where y2 is calculated using the relation,
thus,
Then width of 1st bright fringe on either side of central bright fringe will be
(ANS)
Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.405 mm...
Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.340 mm wide. The diffraction pattern is observed on a screen 2.95 m away. Define the width of a bright fringe as the distance between the minima on either side. A) What is the width of the central bright fringe? in m B) What is the width of the first bright fringe on either side of the central one? in m
Experiment 3 1. Student passes 633 nm laser light through a narrow slit and observe the diffraction pattern on a screen 7.00 m away. The distance on the screen between the centers of the first minima on either side of the central bright fringe is 35.0 mm. (a) How wide is the slit? (b) The intensity at the center of the pattern is lo. What is the intensity at a point on the screen 3.80 mm from the center of...
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