Question

Chapter 27, Problem 06 GO

Interactive LearningWare 27.1 provides some pertinent background information for this problem. Two parallel slits are illuminated by light composed of two wavelengths. One wavelength is λ_A = 599nm. The other wavelength is λ_B and is unknown. On a viewing screen, the light with wavelength λ_A = 599nm produces its third-order bright fringe at the same place where the light with wavelength λ_B produces its fourth dark fringe. The fringes are counted relative to the central or zeroth-order bright fringe. What is the unknown wavelength?

Answer 1