You are comparing two diffraction gratings using two different lasers: a green laser and a red laser. you do these two experiments

1. shining the green laser through grating a you see the first maximum 1 meter away from the center
2. shining the red laser through grating b, you see the first maximum 1 meter away from the center

in both cases, the gratings are the same distance from the screen.

(a) what can you deduce about the gratings?
(b) what would you observe if you shone the green laser through grating b: ?

a. (a) grating a has more lines/mm; (b) the first maximum less than 1 meter away from the center
b. (a) grating b has more lines/mm; (b) the first maximum less than 1 meter away from the center
c.(a) grating b has more lines/mm; (b) the first maximum more than 1 meter away from the center
d. (a) grating b has more lines/mm: (b) the first maximum 1 meter away from the center
e. (a) grating a has more lines/mm; (b) the first maximum more than 1 meter away from the center
f. (a) grating a has more lines/mm; (b) the first maximum 1 meter away from the center