2. Welcome to Optics JEOPARDY PHysics

3. Final Jeopardy Question Reflection Mirrors 100 Lens 500 400 300 200 100 200 300 400 500 refraction Special topics

4. Back Reflection 100 pts 40 What is the angle of reflection of the following diagram?

5. Back Reflection 100 pts Answer 50 degrees

6. Where is an image formed from distant light that is reflected off a concave mirror with a center of curvature of 300 cm ? Back reflection 200 pts

7. Back Reflection 200 pts 150 cm

8. What kind of image is formed from a convex mirror? Back Reflection 300 pts

9. Virtual, upright and smaller Back Reflection 300 pts

10. Back How tall must a plane mirror be for a complete image of a six foot man to form? Reflection 400pts

11. Back Reflection 400 pts Answer Three feet, ½ half the size of the object

12. Back Reflection 500 pts What is the center of curvature of a concave mirror with a focal length of 4 cm?

13. Back Reflection 500pts Answer 8 cm

14. An object is located 5 m in front of a plane mirror. Where does the image appears to be ? Back Mirrors 100pt

15. 5 m behind the mirror Back Mirrors 100 pts

16. Back Mirrors 200 pts Describe the image formed from an object located between the focal point and center of curvature of a concave mirror

17. Back Mirrors 200pts Answer Real, inverted, and magnified located beyond C

18. Back Mirrors 300pts Describe the image of an object that is located between a concave mirror and its focal length.

19. Back Mirrors 300 pts Virtual, upright, and enlarged

20. Back Where must you stand in front of a concave mirror to get an inverted image the same size as you? Mirrors 400 pts

21. At the center of curvature Back Mirrors 400 pts Answer

22. What kind of image will an object located at the focal length form? Back Mirrors 500 pts

23. Back Energy 500 pts Answer No image will form

24. Back Refraction 100 pts Lucite has an index of refraction of 1.50. How fast will light travel through it?

25. Back Refraction 100 pts Answer 2x10^8 m/s

26. Back refraction 200pts A light ray in air is incident on an air to glass interface at an angle of 45 o and is refracted at an angle of 30 o to the normal. What is the index of refraction for the glass?

27. Back Refraction 200pts Answer 1.41

28. Back Refraction 300pts For all transparent materials, the index of refraction is ___

29. Greater than one Back Refraction 300pts Answer

30. Back Refraction 400 pts What happens to the speed of light as it moves into a denser medium?

31. It slows down Refraction 400 pts Answer Back

32. Refraction 500 pts The critical angle for a substance is measured at 60 o. Light enters from air at 40.0 o. At what angle will it continue?

33. Refraction 500 pts Answer 25.4 degrees Back

34. Lens 100 pts Back Describe the path of a light ray passing through the focal point on the left hand side of a convex lens.

35. Lens 100 pts Answer It will pass through the lens and bend parallel to the optical axis. Back

36. Lens 200 pts An 5 cm object is placed 10 cm from a convex lens with a 5 cm focal point. What is the height and location of the image

37. Lens 200 pts Answer Back The object will be 5 cm below the Optical axis at 10 cm on the opposite Side of the lens.

38. Describe the path of Light traveling parallel to the optical axis as it enters a convex lens. Back Conservation of energy 300 pts

39. Lens 300 pts Answer Back It passes through the focal point on the Opposite side of the lens

40. Back Lens 400 pts Images formed by concave lenses form what type of images?

41. Lens 400 pts Answer Back Upright, virtual, and smaller

42. Back Lens 500 pts An object is 15mm in front of a converging lens, and the image is 4.0mm behind the lens. What is the focal length of the lens?

43. Lens 500 pts Answer Back 3.2mm

44. Special Reports 100 pts What phenomenon causes rainbows? Back

45. Special reports 100 pts Answer Back Total internal reflection

46. Back Special reports 200 pts In an optical fiber, the index of refraction of the core is ______ that of the outer layer.

47. Special Reports 200 pts Answer Back Greater than

48. Back Special Reports 300 pts Nearsightedness can be corrected by using

49. Special reports 300 pts Answer Back Concave lens (diverging)

50. Back Special Reports 400 pts What type of images are formed from the eye?

51. Real, inverted Special Reports 400 pts Answer Back

52. What causes mirages? Back Special reports 500 pts

53. Special Reports 500 pts Answer Back Mirages are caused from light bending as it enters an air mass of different temperatures. Light bends toward the normal as it goes from hot to cold air, and away from the normal as it goes from cold to hot air.

54. What color is reflected when blue, red and green light is mixed together.? Back Final Jeopardy

55. Final Jeopardy Answer White light Back