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Student ID: 21973473

Exam: 986055RR - Light

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Questions 1 to 25: Select the best answer to each question. Note that a question and its answers may be split across a page break, so be sure that you have seen the entire question and all the answers before choosing an answer.

1. Which of the following occurs when light is reflected from a rough or unpolished surface? A. The original pattern of the light is preserved.

B. The original pattern of the light is distorted.

C. The angle of reflection is greater than the angle of incidence.

D. The angle of reflection is less than the angle of incidence.

2. Rays of light incident on a lens and parallel to the principal axis of the lens converge A. in back of the lens.

B. at the focal point of the lens.

C. in front of the lens.

D. at the center of curvature of the lens.

3. A virtual image produced by a lens is always A. smaller than the object.

B. located in front of the lens.

C. larger than the object.

D. located in the back of the lens.

4. The shortest wavelength within the visible spectrum is _______ light. A. violet

B. orange

C. red

D. blue

5. The term angle of deviation is used in reference to A. a polarizer.

B. a prism.

C. a lens.

D. an analyzer.

6. When an object is placed 8 millimeters from a concave spherical mirror, a clear image can be projected on a screen 16 millimeters in front of the mirror. If the object has a height of 4 millimeters, the height of

the image is A. 4 millimeters.

B. 12 millimeters.

C. 8 millimeters.

D. 2 millimeters.

7. A typical mirror in a person's house would be an example of a/an _______ mirror. A. angular

B. convex

C. concave

D. plane

8. If the distance from a converging lens to the object is less than the focal length of the lens, the image will be A. virtual, upright, and smaller than the object.

B. real, inverted, and smaller than the object.

C. virtual, upright, and larger than the object.

D. real, inverted, and larger than the object.

9. A material that transmits nearly all the light in a ray because it offers little resistance to the light is A. transparent.

B. fluorescent.

C. opaque.

D. translucent.

10. When the image of a distant object is brought into focus in front of a person's retina, the defect is called A. spherical aberration.

B. chromatic aberration.

C. farsightedness.

D. nearsightedness.

11. In any one material, all electromagnetic waves have the same A. amplitude.

B. frequency.

C. velocity.

D. wavelength.

12. A failure of the red-sensitive nerves in the eye to respond to light properly causes A. chromatic aberration.

B. color blindness.

C. farsightedness.

D. astigmatism.

13. If you're driving towards the sun late in the afternoon, you can reduce the glare from the road by wearing sunglasses that permit only the passage of light that's A. dispersed in a spherical plane.

B. polarized in a vertical plane.

C. polarized in a horizontal plane.

D. dispersed in a vertical plane.

14. The image formed by a convex spherical mirror will always be A. upright and larger than the object.

B. inverted and smaller than the object.

C. upright and smaller than the object.

D. inverted and larger than the object.

15. The longest wavelength within the visible spectrum is _______ light. A. violet

B. red

C. orange

D. blue

16. When a simple magnifying glass is used properly, the image will be formed A. about 250 millimeters in front of the lens.

B. about 500 millimeters behind the lens.

C. at the focal point of the lens.

D. just inside the focal length of the lens.

17. The portion of a light ray that falls on a surface is a/an A. diffuse reflection.

B. incident ray.

C. specular reflection.

D. reflected ray.

18. In which of the following materials is the velocity of light greatest? A. Fused quartz

B. Air

C. Crown glass

D. Water

19. The bending of light as it passes into a transparent material of different optical intensity is known as A. aberration.

B. reflection.

C. conversion.

End of exam

D. refraction.

20. An object is located 51 millimeters from a diverging lens. The object has a height of 13 millimeters and the image height is 3.5 millimeters. How far in front of the lens is the image located? A. 1.12 millimeters

B. 13.7 millimeters

C. 51 millimeters

D. 189 millimeters

21. If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is A. 8 lux.

B. 648 lux.

C. 24 lux.

D. 216 lux.

22. Which of the following values represents an index of refraction of an actual material? A. 1 / 2

B. 1 / 4

C. 5 / 4

D. 0

23. Which one of the following scientists did not study the properties of light? A. Einstein

B. Newton

C. Kepler

D. Maxwell

24. Compared to yellow light, orange light has A. a faster wave velocity.

B. the same frequency.

C. a different polarization.

D. a longer wavelength.

25. Reflecting telescopes are popular because they're A. more durable than a refracting telescope.

B. easier to build than a refracting telescope.

C. more powerful than a refracting telescope.

D. smaller than a refracting telescope.