Question

Using Huygens's construction of secondary wavelets explain how a diffraction patternis obtained on a screen due to a narrow slit of width d (or a) on which a monochromaticbeam of light is incident normally.Show that the angular width of the first diffraction fringe is half that of the centralfringe.Explain why the maxima at e. = (2n+1) become weaker and weaker withincreasing n.2d​

Answer 1

Explanation:

Using Huygens's construction of secondary wavelets explain how a diffraction patternis obtained on a screen due to a narrow slit of width d (or a) on which a monochromaticbeam of light is incident normally.Show that the angular width of the first diffraction fringe is half that of the centralfringe.Explain why the maxima at e. = (2n+1) become weaker and weaker withincreasing n.2d