1 / 9

Understanding Refraction Laws: Calculations, Index of Glass, Speed of Light

This informative guide highlights the important laws of refraction, including calculations for the refractive index of glass, speed of light in different mediums, angles of incidence, and total internal reflection. Learn how to determine refractive indexes of substances and where light travels fastest. Additional visuals demonstrate ray paths and reflect/refract phenomena.

dfournier
Download Presentation

Understanding Refraction Laws: Calculations, Index of Glass, Speed of Light

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. A reminder of the important laws of refraction Using a vacuum as medium 1 we get the absolute refractive index n of a substance: If one of the media is air we can just assume its refractive index is 1 and use these equations

  2. refractive index of glass = 1.5 Calculate the speed of light in the glass.

  3. refractive index of glass = 1.5 (b) Determine (i) the angle of incidence, θ, (ii) the refractive index of the liquid. ≈230 =1.3

  4. Same angles as at left hand side into the air. Total internal reflection at the base of the prism

  5. (refractive index of the glass in block 1 = 1.45) (a) Calculate (i) the incident angle θ1, θ1=22.8

  6. (refractive index of the glass in block 1 = 1.45) (ii) the refractive index of the glass in block 2, n1=1.60

  7. (iii) the angle θ3 by considering the refraction at point A. usually we write in this case θ3=59.40

  8. In which of the two blocks of glass will the speed of light be greater? The one which has the lowest refractive index because: implies So where n is smaller c2 will be larger

  9. c) Using a ruler, draw the path of a ray partially reflected at A on Figure 1. Continue the ray to show it emerging into the air. No calculations are expected. (2 marks) reflection at boundary with i = r refraction (at bottom surface) bending away from normal

More Related