When red light (λr = 715 nm) illuminates a diffraction grating, asecond order maximum is seen at a vertical location y = 12.5 cm ona screen L = 45.0 cm away from the grating.
(a) At what angle does the second order maximum occur?
(b) What is the distance, d, between the slits?
(c) If the grating is 2.50 cm wide, how many slits make up thegrating?
(d) Where on the screen would the second order maximum occur for anorange light λo = 615 nm?
