Chapter 26 - Chapter 26 39 Picture the Problem The image...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 26 39. Picture the Problem : The image shows two light rays entering water. One ray enters at 10.0 ° and refracts to 8.00 ° . The second ray enters at 20.0 ° and refracts to 15.5 ° . Strategy: Solve Snell’s Law (equation 26-11) for the index of refraction of water using the given incident and refracted angles and the index of refraction for air (given in table 26-2). Then calculate the percent difference between the measured values and the index of refraction of water given in table 26-2. Solution: 1. Solve Snell’s Law for the index of refraction: 2. Calculate n w using : 3. Calculate the percent error: 4. Calculate the n w using : 5. Calculate the percent error: Insight: The refracted angles would have been 7.52 ° and 14.9 ° if Ptolemy had measured with perfect accuracy. 43. Picture the Problem : The figure shows a scuba diver who sees the sun at an angle of 35 ° from the vertical. The incident sunlight makes an angle of θ i with the vertical. Strategy: Use Snell’s Law (equation 26-11) to calculate the incident angle of the sunlight. The angle of the sun from the horizontal is Solution: 1. Calculate the incident angle: 2. Find the Sun’s angle above the horizon: Insight: The scuba diver perceives the Sun to be much higher in the sky than does his friend on the shore. 49. Picture the Problem : The image shows a light beam entering a 45 ° - 90 ° -45 ° prism perpendicular to the long side. It undergoes total internal reflection on both short sides before exiting vertically downward through the long side. Strategy: The angles of incidence for both internal reflections are exactly 45°. Solve equation 26-12 for the index of refraction for the prism, where the external index of refraction is that of air.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Solution: Solve equation 26-12 for the minimum index of refraction: Insight:
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern