a diffraction grating used at normal incidence gives a yellow line,λ=5750å in a certain spectral order superimposed on a blue line,λ=4600å of next higher order. if the angle of diffraction is 30°,what is the spacing between the grating line?

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Dona Elizabeth · Answer

We have sin30°=nN5750×10^-10..... (1) Sin30°=nN4600×0^-10.....(2) Equating we get n=4 Substitute values of n in equation (1) We get N=217,391 lines per meter. For finding spacing between lines d=1/N d=4.60 meter

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a diffraction grating used at normal incidence gives a yellow line,λ=5750å in a certain spectral order superimposed on a blue line,λ=4600å of next higher order. if the angle of diffraction is 30°,what is the spacing between the grating line?

a diffraction grating used at normal incidence gives a yellow line,λ=5750å in a certain spectral order superimposed on a blue line,λ=4600å of next higher order. if the angle of diffraction is 30°,what is the spacing between the grating line?

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