Diffraction 1 2 3 4 1) A beam of monochromatic light is aimed at a slit of width
ID: 1774593 • Letter: D
Question
Diffraction 1 2 3 4 1) A beam of monochromatic light is aimed at a slit of width w and forms a diffraction pattern. In which case is the width of the central band greater? When the incident light is blue When the incident light is yellow Same in both cases, blue and yellow Submit You currently have O submissions for this question. Only 2 submission are allowed. You can make 2 more submissions for this question (Survey Question) 2) Briefly explain your answer to the previous question. Submit You currently have O submissions for this question. Only 2 submission are allowed. You can make 2 more submissions for this question.Explanation / Answer
1) Yellow.
2) The reason is for a diffraction pattern to be formed, the slit width should be small in comparison to the wavelength of the light, therefore for the same slit width, a larger wavelength over a small slit width will have a larger spread, therefore, bigger central band.
3) (a) and (c)
4) It is clear that the color of the central bright fringe would change, since the color with larger wavelength will have a larger spread over the color with smaller wavelength and at the center, they overlap to produce other colors. The same is true for the location of dark fringes they would change because of different wavelengths.