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iurod
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Homework Statement
Light of wavelength 680 nm falls on two slits and produces an interference pattern in which thefourth-order fringe is 38 mm from the central fringe on a screen 2.0 m away. What is the separationof the two slits?
Homework Equations
Sin[tex]theta[/tex]=2m([tex]\lambda[/tex]2d)
x=L([tex]\lambda/d[/tex]
The Attempt at a Solution
My givens are:
[tex]\lambda[/tex]= 680nm
L= 2.0m
x438mm
using equation x=L([tex]\lambda/d[/tex] I got:
0.038 = 2.0m(680 x 10-9(4)/d)
d=2.0m(680 x 10-9(4)/d)/0.038)= 1.4x10-4m
Am I doing this correctly?
Thanks.