[问答题]
For light consisting of wavelengths between 40em n*pp bzrnut9,9a/4 0 nm and 700 nm, incident nbs j(chnl, *wso45pn 0ormally on a diffraction grating, for what orders (if any) j ssnpbh ,o(c50w4l*nwould there be overlap in the observed spectrum? Does your answer depend on the slit spacing?
