(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Monochromatic light with wavelength 580nm passes through a single slit 2.20um wide and 1.80m from a screen.

Find the distance between the first- and second-order dark fringes on the screen.

2. Relevant equations

3. The attempt at a solution

y=n[tex]\lambda[/tex]L/2d

y1=0.237237m

y3=0.711818m

delta y = 0.4745m

This doesn't work-I think possible because there arn't two slits but I'm not sure of what to do if this is the case??

Thanks for any help.

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# Homework Help: Diffraction Grating fringes

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