CP PHYSICS OPTICS REVIEW Name: ___________________________ __ period 1. What is the difference between regular reflection and diffuse reflection? 2. What is an object? What is an image? 3. What is the difference between a real image and a virtual image? 4. What kind of image does a plane mirror form? 5. What kind of image does a convex mirror form? 6. When does a concave mirror produce an image the same size as the object? 7. When does a concave mirror produce no image? Why? 8. When does a concave mirror produce a virtual image? CP PHYSICS, OPTICS REVIEW, page 2 9. Identify the correct mirrors for the following statements. More than one answer is possible for some statements. A = plane mirror B = concave mirror C = convex mirror ____ a) produces an image which may be reduced, enlarged, or the same size as the object ____ b) only produces reduced images ____ c) only produces images the same size as the object ____ d) diverging mirror ____ e) converging mirror ____ f) only forms virtual images ____ g) produces upright virtual images ____ h) can produce real or virtual images ____ i) used for security because they show wide angle views ____ j) can be used as a magnifying mirror 10. What mirror is used to prevent spherical aberration? 11. What does it mean if a medium is more optically dense than another medium? 12. What is a mirage? Identify an everyday example of a mirage. CP PHYSICS, OPTICS REVIEW, page 3 13. What is the consequence of the refraction of sunlight in our atmosphere? 14. What is dispersion? 15. Why does light separate into the color spectrum when it is passed through a prism? 16. Why is the sky blue? 17. What is total internal reflection? What is the critical angle? 18. What happens when a light ray’s angle of refraction is equal to or greater than the critical angle for that material? 19. What causes nearsightedness and how is it corrected? 20. What causes farsightedness and how is it corrected? 21. What kind of images does a concave lens form? CP PHYSICS, OPTICS REVIEW, page 4 22. When does a convex lens produce an image the same size as the object? 23. When does a convex lens produce no image? Why? 24. When does a convex lens produce a virtual image? 25. Identify the correct lenses for the following statements. A = convex lens 26. B = concave lens ____ a) produces an image which may be reduced, enlarged, or the same size as the object ____ b) only produces reduced images ____ c) diverging lens ____ d) converging lens ____ e) only forms virtual images ____ f) produces upright virtual images ____ g) can produce real or virtual images ____ h) produces enlarged virtual images Light travels through a material with an angle of incidence of 36.0o. If the angle of refraction is 28.0o, what is the index of refraction for the material? CP PHYSICS, OPTICS REVIEW, page 5 27. The index of refraction for a diamond is 2.42. What is the speed of light in a diamond? 28. What is the focal length of a mirror that has a radius of curvature of 25.0 cm? 29. What is the radius of curvature of a mirror that has a focal length of 25.0 cm? 30. A converging lens has a focal length of 15.0 cm. If an object is placed at 55.0 cm from the lens, where will its image be located? 31. If the object in #30 is 8.0 cm high, what is the size of its image? 32. A concave mirror has a focal length of 10.0 cm. If an object produces a virtual image 18.0 cm from the mirror, where is the object located? CP PHYSICS, OPTICS REVIEW, page 6 33. A concave mirror has a focal length of 30.0 cm. An object is placed 40.0 cm from the mirror. Where must a screen be located to see the image formed? 34. If the object in #33 is 12.0 cm high, what will the size of its image be? 35. Complete the ray diagrams below and locate the images produced. For each image, identify the following: real OR virtual, upright OR inverted, and reduced, enlarged, OR same size. a) CP PHYSICS, OPTICS REVIEW, page 7 b) c) CP PHYSICS, OPTICS REVIEW, page 8 d) e) f)