A transparent diffraction grating of a quartz spectrograph is 25 mm wide and has 250 lines per millimeter. The focal length of an objective in whose focal plane a photographic plate is located is equal to 80 cm. Light falls on the grating at right angles. The spectrum under investigation includes a doublet with components of wavelengths 310.154 and 310.184 nm. Determine:
(a) The distances on the photographic plate between the components of this doublet in the spectra of the first and the second order;
(b) Whether these components will be resolved in these orders of the spectrum.