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silence98
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Homework Statement
A grating having 1000 lines per mm is illuminated with sodium light of mean wavelength 589.3 nm. Determine the maximum order of diffraction that can be observed.
Homework Equations
dsin([tex]\theta[/tex])=m[tex]\lambda[/tex]
d=slit spacing
The Attempt at a Solution
The order of diffraction is given by m, and m=(dsin[tex]\theta[/tex])/[tex]\lambda[/tex], so i figure m takes a maximum value when sin([tex]\theta[/tex])=1, or when m=d/[tex]\lambda[/tex] but i am not sure if this is correct.
I'd be grateful for any hints.
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