A student performing a double-slit experiment is using a green laser with a wavelength of 530 nm. She is confused when the m = 5 maximum does not appear. She had predicted that this bright fringe would be 1.6 cm from the central maximum on a screen 1.5 m behind the slits.
a. Explain what prevented the fifth maximum from being observed.
b. What is the width of her slits?