light of wavelength 550 nm is incident on a diffraction grating that is 1 cm wide and has 1000 slits. What is the dispersion of the m = 2 line?

The dispersion is

Explanation:

From the question we are told that

    The wavelength of the light is  

    The width of the grating is

    The  number of slit is  N =  1000 slits

    The order of the maxima is  m =  2

Generally the spacing between the slit is mathematically represented as

substituting values

Generally the condition for constructive interference is

substituting values

Generally the dispersion is mathematically represented as

substituting values

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