Question

what is the separation in meters between two slits for which 606 nm orange light has its first maximum at an angle of 30.2°?

Answer 1

m λ = d sin θ

d = 6.06E-7 / sin 30.2 for m = 1 first maximu

d = 6.06E-7 / .503 = 1.20E-6 m

d = .0012 mm