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1a. Coherent red light is shone on a pair of slits separated by d, and on...

1a. Coherent red light is shone on a pair of slits separated by d, and on a grating of many slits, each neighboring pair also separated by d. The locations of bright fringes are...

a. shifted to smaller angles for the double-slit

b. the same for both

c. shifted to larger angles for the double slit

1b. Red light and green laser light illuminate a diffraction grating simultaneously. The distance between red and green maxima on a distant screen in zeroth- (m = 0), first- (m = 1) and second- (m = 2) order are proportional, respectively, to which sequence of numbers?

a. 1, 1, 1

b. 0, 1, 2

c. 1, 2, 3

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