Two long, extremely narrow slits are situated close to each other in an otherwise opaque plate. Parallel monochromatic l
Posted: Wed May 04, 2022 1:20 pm
Two long, extremely narrow slits are situated close to each other in an otherwise opaque plate. Parallel monochromatic light is incident on the slits. A white screen is placed at a great distance beyond the slits. A pattern of light and dark fringes is observed on the screen. (a) Explain why some regions are light and others dark. (b) Sketch a graph illustrating the pattern of light and dark fringes that is obtained. (c) What happens to the pattern if one of the slits is covered up? (d) What pattern of fringes results if the incident light is white rather than monochromatic?