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George_H
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Homework Statement
The light shining on a diffraction grating has a wavelength of 488 nm (in vacuum). The grating produces a second-order bright fringe whose position is defined by an angle of 8.02°. How many lines per centimeter does the grating have?
Homework Equations
d sin q = nl
The Attempt at a Solution
d = (2)(488)/sin(8.02) = 6995.474955
d = 1/N
N = 1/d = 1/6995.474955 =1.429495505X10^-4 (per M) X 100 = 0.014294955
It got this answer and it is wrong, I have no idea where to go from here or what to do and would be grateful of any help, thanks!