Current Attempt in Progress A beam of light consisting of wavelengths from 465 nm to 635 nm is directed perpendicularly onto a diffraction grating with 160 lines/mm. (a) What is the lowest order that is overlapped by another order? (b) What is the highest order for which the complete wavelength range of the beam is present? In that highest order, at what angle does the light at wavelength (c) 465 nm and (d) 635 nm appear? (e) What is the greatest angle at which the light at wavelength 465 nm appears? (a) Number Units (b) Number i Units (c) Number i Units (d) Number Units (e) Number i Units > Current Attempt in Progress When monochromatic light is incident on a slit 22.3 m wide, the first diffraction minimum lies at 1.90 from the direction of the incident light. What is the wavelength? Number eTextbook and Media Units Current Attempt in Progress If we decrease the slit width, what happens to the width of the central maximum in the diffraction pattern? increases decreases O remains the same