Question: In this question, we will consider the effects of both single slit diffraction and double slit interference on the pattern of a double slit setup. A double slit experiment is illuminated with = 475 nm light. Taking the most intense central interference fringe as m = 0, we find that the m = 8th fringe coincides with the first minimum of the diffraction envelope. This occurs at 0 = 6.82°. Part 1) What is the slit width? a = um Part 2) What is the slit separation? d = um Part 3) If the same double slit experiment is now illuminated with light with wavelength A = 690 nm, at what angle 0 does the first minimum in the diffraction envelope now occur and what is the coinciding order number for the interference pattern? m =

Question: In this question, we will consider the effects of both single slit diffraction and double slit interference on the pattern of a double slit setup. A double slit experiment is illuminated with = 475 nm light. Taking the most intense central interference fringe as m = 0, we find that the m = 8th fringe coincides with the first minimum of the diffraction envelope. This occurs at 0 = 6.82°. Part 1) What is the slit width? a = um Part 2) What is the slit separation? d = um Part 3) If the same double slit experiment is now illuminated with light with wavelength A = 690 nm, at what angle 0 does the first minimum in the diffraction envelope now occur and what is the coinciding order number for the interference pattern? m =

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