A lab technician uses laser light with a wavelength of 660 nm to test a diffraction grating. When the grating is 42.0 cm from the screen, the first-order maxima appear 6.08 cm from the center of the pattern. How many lines per millimeter does this grating have?
n(lamda)=d*sin(theta) n=1 lamda= 660 nm= 6.60 *10 ^7 theta= 0.0606m/0.420m = 0.144 then Take the tan1 = 8.2 and plug in to formula and solve for d 1(6.60*10^7)=d * sin(8.2) which would equal...
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