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A diffraction grating has 4000 lines/cm. what is the slit separation? Please show how to work problem out A. 4.0 um B. 2.5

A diffraction grating has 4000 lines/cm. what is the slit separation?

Please show how to work problem out

A. 4.0 um

B. 2.5 um

C. 400 nm

D. 250 nm

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