A 500 line/mm diffraction grating is illuminated by light of wavelength 510nm. how many diffraction orders are seen, and what is the angle of each?
the spacing between the lines d = 1mm/500 = 2000 nm
sinthetam = m*lambda/d = m*510nm/2000nm = 0.255m
thetam = sin^-1(0.255m)
theta0 = sin^-1(0.255*0) = 0
theta1 = 14.77
theta2 = 30.66
theta3 = 49.9
theta4 = does not exist
There are three orders of bright lines on each side of the central bright line.
A 500 line/mm diffraction grating is illuminated by light of wavelength 510nm. how many diffraction orders...
A 500 line/mm diffraction grating is illuminated by light of wavelength 510m. How many bright fringes are seen on a 2.0-m-wide screen located behind the grating?
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