# physics

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?
a. 5
b. 6
c. 7
d. 8

1. 0
2. 0
3. 8
1. noooob

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2. 0
posted by me
2. i dont think youre a noob :)

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2. 0
posted by Anonymous

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