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Excited potassium atoms emit deep-violet light at
wavelengths 404.4 nm and 404.7 nm. Suppose light
from a potassium lamp passes through a diffraction
grating that has 960 slits per millimeter.
Part A
How far behind the grating must a viewing screen be placed so that the two first-order tringes are separated by 10
Express your answer with the appropriate units.
L= 0.00238
m
Submit Previous Anawace Bequest Answer
X Incorrect; Try Again; 13 attempts remaining.

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