Please answer the following two questions and show ALL work and formulas used please

3. Consider a red light (XI = 700 nm) and a blue light (7% = 400 nm) in an interference Young double-slit experiment (Figure). a) Compute the angular separation Acp = (pmI (pmb between the corresponding third maximum knowing that the screen and the source are in the far distance regime and that the separation between the slits is d = 0.1 mm. b) Express the frequency of the red light 0;) in Hz. 4. Consider the diffraction-interference pattern of the Figure below, which is produced by an Nslit diffraction grating in the far distance regime. a) specify the number of slits, N. (Consider that the width of each slit is negligible in comparison with the distance among them). All (p