In an initial single-slit diffraction experiment, light of wavelength λ passes through a slit of width a, producing an angular separation θ1 between the central maximum and the first minimum. In a second setup, the wavelength is increased to 1.2λ and the slit width is reduced to 0.60a. Determine the ratio θ2/θ1 for the new arrangement, and state whether the central maximum becomes wider or narrower.