(a) Calculate the distance d between adjacent rulings. (b) At what angles will i

Question

(a) Calculate the distance d between adjacent rulings. (b) At what angles will intensity maxima occur on a viewingscreen if the radiaion incident on the grating has a wavelength of589 nm? Please help with the steps involved in solving thisproblem...I am trying to do multiple ones like this and it would bea great help. (a) Calculate the distance d between adjacent rulings. (b) At what angles will intensity maxima occur on a viewingscreen if the radiaion incident on the grating has a wavelength of589 nm? Please help with the steps involved in solving thisproblem...I am trying to do multiple ones like this and it would bea great help.

Explanation / Answer

(a) The distance d between adjacent rulings = (20mm) / (6000)                                                             = (20*10-3m) / (6.0*103)                                                             = 3.33*10-6m (b) We know the formula for the diffraction is                    dsin = m                      sin = (m / d)                           = sin-1(m / d)                             = sin-1[(1)(589*10-9m) /(3.33*10-6m)]                             = 10.2o

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