Hi

Manochromatic light of a wavelength of 620 nm from distant sources passes through a 0.450 mm wide slit, the diffraction pattern is observed on a screen located 9.00 nm from the slit, in terms of intensity I at the peak of the central maximum what is the intensity of the light from the screen at the following distances from the central maximum center: a)4 nm b)3nm

note: formula and step by step