In a double-slit experiment it is found that blue light of wavelength 478 nm gives a second-order maximum at a certain location on the screen. What wavelength of visible light would have a minimum at the same location?(adsbygoogle = window.adsbygoogle || []).push({});

-----

I have no clue how to approach this problem but looking in the book I assumed the wavelength with a minimum at that same location should be 3rd order (m=3) so I set up an equation as follows:

m1*Lambda(max) = m2*Lambda(min)

Lambda(min) = m1*Lambda(max)/m2 = (2*478*10^-9)/3 = 319 nm

Apparently it's wrong. I'm lost on where to go from here.. Any help ??

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Double Slit Diffraction Problem

**Physics Forums | Science Articles, Homework Help, Discussion**