A diffraction Grating has 1.26 × 10* rulings uniformly spaced over a width of 25.5 mm.It is illuminated at normal incidence by yellow light from a sodium vapor lamp. The lightcontains two very closely spaced emission lines (known as the sodium doublet) ofwavelengths 589.00 nm and 589.59 nm.(a)At what angle the first order maximum occur (on either side of the centraldiffraction pattern) for the wavelength 589.00 nm?( dsine = m2 )de - a0da(b)Use the dispersion of the grating Dcalculate the angularseparation between the two lines (sodium doublets) in the first order.(c)The diffraction pattern is observed on a screen 4.0 m behind the Grating. Whatis the linear separation of the two first order diffracted lines on the screen?

(a) Let d be defined as the distance between slits. Therefore, for given grating d be calculated as,…

Answered: A diffraction Grating has 1.26 × 10"…

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