Answer questions marked in red. Use last page titled reference material containing some formulas to answer some of the question.

2. Brie describe the function of the following parts of the eye Inc (a) Pupil: (b) Cornea: (c) Optic s (d) Rod Photoreceptors: -3. Describe what happens when a light ray starts out in a pond & strikes the surface at the given angles. Include diagrams to help your explanation. The critical angle of water/air is 48* [30] (I) less than the critical angle (2) equal to the critical angle (3) greater than the critical angle Give one similarity and one difference between mirages & shimmering [2C] "What is dispersion and where can it be found? Explain using a real world example a PART D: Application (12 Marks) 1. Consider Fiber Optic Cables... (a] Explain how Fiber Optic Cables work. Use specific terminology [2A]You have a converging lens. You want to produce a real image. Where do you need to place the object? Closer than or and 25 You 'annot produce a real image with a converging lens 9. Which of the following is FALSE about the iris? It is a den. `structure that gives the eye is color. b. It surrounds e pupil. c. It controls the y il's size d. It is a hole in you Ve 10. Wanda has set up a conve ing lens with a focal length of 22 em. She has a card on one side of the lens, 22 cm from its axis of symmetry' & a screen on the opposite side, but she can't forforan image. What's the problem? a. She is using a card for an oh b. She has the card on the wrong side of the lens. C. She has the card at F on the opposite side of the screen who you can't form an image. d. She has the card at F on the same le of the screen who you can't form an image. . An incident light bear starts in a dense me. um & he as towards a less dense medium at an angle of 42" & refracts. You know that: a. The critical angle of the medium is 42" b. The critical angle of the medium is I c. The critical angle of the medium ormore than 42 d. More information is needed 12. Which of the following describes a blurry image due to an in ` cularly shaped comea or lens a Hypere b. byopia Myopia d. Astigmatism PART B: Thinking & Investigation (12 Marks) 1.A converging lens has a focal length of 20 em. An object is placed 35 em from the lens. Use GRASS to answer the following questions and show all work! (a) Determine the distance of the image from the lens [2T] "(b) If the object is 5 cm tall, how tall is the image? [2T](e) What is the magnification of the object? [IT] light beam travels from water into an unknown substance at an angle of incidence of 423. IGo angle of refra on is 36.36", what is the index of refraction of the substance? Show all work! [27] 3.The speed of light in anowknown substance is 2.03 x 10" (a) Calculate the index of refreshon for this substance. 5 ow all work! [21] (b) Determine the possible identity of the subst & (IT] 4 Suggest what media A & B could be by o posing an app spriate material for each. Explain your answer [21] Medium A Medium B PART - Communication (12 Marks) Match the letters (A,B,C,D E) with the variable that represents it (30] 1. hi B 2. A IE C D(b) Draw a diagram to support your answer in PART A [1A] (c) Suppose you came up with a Fiber Optic Cable that has a critical angle of 20', compared to the traditional cable that has a critical angle of 22". Would this new cable be considered a good fiber optic cable? Explain in detail why or why not? [24] 2. Consider the following lens... "Draw a may diagram (3 rays) & show the image. Describe the image characi ralies using SALT [A] S- A - L - T- (b) What type of J is is this? [IA] 3. You desir a total internal reflection experiment where a light ray mes from water into glass, at an angle of incident -1 52". Would this scenario result in total internal reflection -lain your answer [24]Reference Materials Equations Table 18 INDEX OF REFRACTION M = h/h. (A = 5893 A; Temperature = 20 "C except as noted) Material Refractive index M = - d/d. h/h. = - d/d. air, dry (STP) 1.00029 alcohol, ethyl 1.360 1/f = 1/d. + 1/d, benzene 1.501 f= (dodi)/[di + do) cakite 1.6583 1.4864 do = (fdi)/[di -f) canada balsam 1.530 carbon dioxide (STP) 1.00045 di = (fdo)/[do - f) carbon disulfide 1.625 carbon terrachloride 1.459 n = c/v diamond 2.4195 n. sind = n sine. glass, crown 1.5172 Hint 1.6270 n sind, = n,sing0 glycerol 1.475 ice 1.910 lucite 1.50 quartz 1.544 1.553 quartz. fused 1.45845 sapphire (Al, O,) 1.7686 1.7604 water, distilled 1.953 water vapor (STP) 1.00025