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May 23, 2015

Homework Help: physics

Posted by ashley -- on Saturday, April 30, 2011 at 6:24pm.

Monochromatic light of wavelength 550 nm passes through a diffraction grating that has 55000 lines/m. A bright line appears on the screen at an angle of 12.23o from the central bright fringe. What is the order of this bright line?
Choose one answer.
a. 5
b. 6
c. 7
d. 8

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