(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

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.

2. Relevant equations

dsin([tex]\theta[/tex])=m[tex]\lambda[/tex]

d=slit spacing

3. 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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# Homework Help: Diffraction Grating Maximum Order

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