3. The following questions concern interference. A bright laser light incident on a mask with two narrow slits produces the pattern shown below on a distant screen. Original pattern: - - - - - a) What features of the original pattern would change if the slits in the mask were placed closer together? b) What features of the original pattern would change if additional narrow slits were included in the mask at the same separation? c) An experiment is conducted with a laser of wavelength 510 nm and a mask. A screen is 8 m behind the mask. Suppose the mask contains... two very narrow slits separated by a distance of 0.05 mm. What is the distance between the central maximum and the 3rd minimum on the screen? a diffraction grating with 500 slits per mm. What is the distance between the central maximum and the 2nd principal maximum on the screen