SP212‐Spring‐2016 CH‐33‐B Assignment First do the following Wiley‐Plus assignment: Assignment #33b After completing the Wiley‐Plus, in your homework notebook, complete the following problems: CH33 Questions # 7 and 9. CH33 Problems # 55 and 69. To check your work, the answers to the odd problems are in the back of the book. The answers to the even problems are: none assigned this assignment. Homework Then complete the attached worksheets: (Note: the above problems were designed to ensure you have the skills to solve the worksheet problems. It is imperative to your learning of the problem solving technique to do the above problems BEFORE attempting the worksheet problems. You are graded on both! Homework notebooks are graded.) CH‐33‐B‐1: For each of the equations below, 1) State what each term is in your own words … 2) What the units of each term are… 3) What is the general use of that equation in your own words? A. I  I0 cos2 ( ) ,beveryspecificonwhenthisequationisusedforfullcredit.
B. n  c v
C. n1 sin(1)  n2 sin(2 )
D. c  sin 1
n2
n1
E.  B  tan 1
n2
n1
F.
In your own words, explain the difference between when to use Letter C’s equation and Letter D’s equation. CH‐33‐B‐2: The diagrams show four pairs of polarizing sheets, with the polarizing directions indicated by dashed lines. The two sheets of each pair are placed one behind the other and the front sheet is illuminated by unpolarized light. The incident intensity is the same for all pairs of sheets. Rank the pairs according to the intensity of transmitted light, least to greatest. Show all work CH‐33‐B‐3: A laser beam in air is incident on a material of refractive index 1.29 at an angle of 60
o with respect to the normal (dashed line at x=0). The x‐coordinates of the letters A, B, C, D and E are 0.3, 0.5, 0.7, 0.9 and 1.1m and each letter is 1.0m below the interface. The letter that the beam strikes is Show all work CH‐33‐B‐4: Using the below diagram and the fact that the index of refraction for diamond is 2.42. a. What is the correct equation (using the angles as labeled in the drawing) for finding the refracted ray angle in air? Ray 2 Ray 3 Show all work b. Will an incident ray angle of 23eliminate refracted ray 3? Explain/ Show all work c. What is the numerical value of the incident ray angle necessary to polarize the reflected ray (ray 2)? Show all work CH‐33‐B‐5: o A laser beam in a material of refractive index 1.7 is incident on air at an angle of 40 with respect to the normal. a) The following statement best describes the beam when it strikes the interface. o
A. The beam is totally reflected at an angle of θ'1 = 22 .
B. The beam is totally reflected at an angle of θ'1= 36 .
C. The beam is totally reflected at an angle of θ'1= 40 .
D. The beam is mostly refracted at an angle of θ2 = 36 .
E. The beam is mostly refracted at an angle of θ2= 22 . o
o
o
o
Explain: b) When the laser beam is traveling in the material with a refractive index of 1.7 what is the speed of the laser beam? Show all work