(a) If the wavelength used in a single-slit diffraction experiment increases, will the width of the central maximum (1) increase, (2) remain the same, or (3) decrease? Why?
(b) If the width of the slit is 0.45 mm, the wavelength is 400 nm, and the screen is 2.0 m from the slit, what would be the width of the central maxi-mum?
(c) What if the wavelength is 700 nm?