435 nm laser light falls on a diffraction grating and forms an interference pattern on a wall...
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Question:
435 nm laser light falls on a diffraction grating and forms an interference pattern on a wall 0.88 m behind the grating. The third bright spot is 944 mm from the central bright spot.
a) What is the spacing between the lines in the grating?
d = μm
b) How many lines per mm is this?
lines/mm =
c) If the grating were illuminated instead with a red 645 nm laser, what would be the distances to the first five bright spots from the central bright spot? If a bright spot does not form, enter DNE (does not exist)
x1 = m
x2 = m
x3 = m
x4 = m
x5 = m
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