Narrow, parallel, glowing gas-filled tubes in a variety of colors form block letters to spell out the name of a nightclub. Adjacent tubes are all 1.10 cm apart. The tubes forming one letter are filled with neon and radiate predominantly red light with a wavelength of 640 nm. For another letter, the tube emits predominantly blue light at 440 nm. The pupil of a dark-adapted viewer's eye is 5.80 mm in diameter. (In this problem, you may use the Rayleigh criterion for the limiting angle of resolution of an eye.) (a) Which color is easier to resolve? O blue O red State how you decide. This answer has not been graded yet. (b) If she is in a certain range of distances away, the viewer can resolve the separate tubes of one color but not the other. The viewer's distance must be in what range for her to resolve the tubes of only one of these two colors? minimum distance: m maximum distance: m