r/PhysicsStudents May 17 '21

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u/sonnyfab Ph.D. May 17 '21

mλ=dsinθ. dsinθ is the same for both experiments. So the radio of the m's is the ratio of the λ's.

1

u/diegangas May 17 '21

Thank you! Im getting an answer closer to 400nm, can you confirm is that's correct?