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admajoremdeigloriam
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In a double-slit experiment, the slit separation is 2.0mm, and two wavelengths, 750nm and 900nm, illuminate the slits. A screen is placed 2.0m from the slits. At what distance from the central maximum on the screen will a bright fringe from one pattern first coincide with the bright fringe from the other?
what i know:
d=2.0mm or 2.0e-3m
lambda1=750nm or 750e-9m
lambda2=900nm or 900e-9m
y1=y2=Y <-- this is what we're looking for
y=n lambda L / d
d sin@ = n lambda
by equating both Ys i get n1/n2 = lambda2/lambda1
but I end up nowhere, any suggestions?
what i know:
d=2.0mm or 2.0e-3m
lambda1=750nm or 750e-9m
lambda2=900nm or 900e-9m
y1=y2=Y <-- this is what we're looking for
y=n lambda L / d
d sin@ = n lambda
by equating both Ys i get n1/n2 = lambda2/lambda1
but I end up nowhere, any suggestions?
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