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Question 1

1. If red and yellow paint are mixed together, which color of light will be reflected?

A. Red

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B. Black

C. White

D. Orange

Question 2

2. Which of the following values represents an index of refraction of an actual material?

A. .25

B. 1.25

C. 0

D. .5

Question 3

3. The rate at which light energy is radiated from a source is measured in which of the following units?

A. Lumen

B. Candela

C. Lux

D. Angstrom

Question 4

4. The light intensity of a source is 100 candelas. The illuminance on a surface is 4 lux. How far is the surface from the source?

A. 5 meters

B. 4 meters

C. 6 meters

D. 7 meters

Question 5

5. Different _______ of light through two separate mediums causes the bending of wave fronts associated with light rays.

A. rays

B. densities

C. velocities

D. reflections

Question 6

6. Which of the following is accurate in describing converging and diverging lenses?

A. Both of these types of lenses have the ability to produce upright images.

B. Parallel rays converge into a single point at the focal point of a diverging lens, whereas parallel rays diverge at the focal point of a converging lens and spread out.

C. Diverging lenses will produce images behind the lens, and converging lenses will produce images in front of the lens.

D. Both of these types of lenses have the ability to produce real images.

Question 7

7. Which of the following is true regarding the properties of light?

A. Light needs a medium to propagate through a vacuum.

B. Light is not able to display interference or diffraction.

C. Light can only travel in a straight line.

D. Light has a dual nature and acts like both a wave and a particle.

Question 8

8. Which of the following is not a characteristic of electromagnetic waves?

A. They can travel at various speeds through any one material.

B. They can be refracted.

C. They can be reflected.

D. They can travel through a vacuum.

Question 9

9. The longest wavelength within the visible spectrum is _______ light.

A. red

B. orange

C. blue

D. violet

Question 10

10. 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 _________ millimeters.

A. 8

B. 12

C. 4

D. 2

Question 11

11. When white light is incident on a prism, which one of the resulting color components will have the lowest index of refraction?

A. Green

B. Orange

C. Blue

D. Yellow

Question 12

12. Compared to yellow light, orange light has

A. the same frequency.

B. a shorter wavelength.

C. a wavelength closer to that of gamma rays.

D. a longer wavelength.

Question 13

13. A mirror with a reflecting surface that caves inward is said to be

A. angular.

B. concave.

C. convex.

D. plane.

Question 14

14. Which of the following occurs when light is reflected from a rough or unpolished surface?

A. The original pattern of the light is distorted.

B. The original pattern of the light is preserved.

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

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

Question 15

15. 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. 189 millimeters

B. 13.7 millimeters

C. 1.12 millimeters

D. 51 millimeters

Question 16

16. Which of the following statements is true of glare control?

A. Indirect lighting is preferred to direct lighting because it produces less glare.

B. Redirecting lamp fixtures and adjusting bulb types will do little to control glare.

C. Special care must be taken to prevent glare where a low illuminance is required.

D. Using bulbs that aren’t frosted will help to diffuse the light and reduce glare.

Question 17

17. A red opaque object

A. reflects all colors of the visible spectrum but red.

B. absorbs all colors of the visible spectrum equally.

C. reflects red light only.

D. absorbs red light only.

Question 18

18. In any one material, all electromagnetic waves have the same

A. frequency.

B. amplitude.

C. wavelength.

D. velocity.

Question 19

19. The work of which scientist(s) helped to explain light’s ability to propagate through a vacuum?

A. Maxwell

B. Davisson and Germer

C. Newton

D. Fresnel, Fraunhofer, and Arago

Question 20

20. A magnifying glass is an example of a _______ lens.

A. plano-convex

B. double-concave

C. converging

D. plano-concave

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