In: Physics
Part A)
The formula for maxima for the double slit is
y = λLm/d Between 0 and 1, m will equal 1, thus...
y = (585 X 10-9)(1.45)/(5.78 X 10-5)
y = .0147 m which is 1.47 cm
Part B) Between second and fourth order, m = 2
y = (414 X 10-9)(1.45)(2)/(5.78 X 10-5)
y = .0208 m which is 2.08 cm