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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

lambda

lambda

y

y=n lambda L / d

d sin@ = n lambda

by equating both Ys i get n

but I end up nowhere, any suggestions?

what i know:

d=2.0mm or 2.0e

^{-3}mlambda

_{1}=750nm or 750e^{-9}mlambda

_{2}=900nm or 900e^{-9}my

_{1}=y_{2}=Y <-- this is what we're looking fory=n lambda L / d

d sin@ = n lambda

by equating both Ys i get n

_{1}/n_{2}= lambda_{2}/lambda_{1}but I end up nowhere, any suggestions?

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