1 / 4

Light 32

Two identical slides in air are illuminated with monochromatic light. The slides are exactly parallel, and the top slide is moving slowly upward. What do you see in top view? 1. all black 2. all bright 3. fringes moving apart 4. sequentially all black, then all bright 5. none of the above.

lefty
Télécharger la présentation

Light 32

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Two identical slides in air are illuminated with monochromatic light. The slides are exactly parallel, and the top slide is moving slowly upward. What do you see in top view? 1. all black 2. all bright 3. fringes moving apart 4. sequentially all black, then all bright 5. none of the above The path length difference will be related to the separation distance between the two slides. When d = Nl you get constructive interference and when d = (N+1/2)l you get destructive interference.

  2. Example: A plano-convex lens (n = 1.523) of 1/8 diopter power is placed, convex surface down, on an optically flat surface as shown in fig 7-17a. Using a traveling microscope and sodium light (l = 589.3 nm), interference fringes are observed. Determine the radii of the 1st and 10th dark rings.

More Related