1-12. The terms dull, bright, vivid, and brilliant are used to describe what color  characteristic? 1. Hue 2.    Brightness 3. Saturation 4. Purity Learning Objective: Identify ways in which light reacts with various  mediums. 1-13. When light waves encounter an object,   which of the following actions may take place? 1. Reflection 2.    Absorption 3.    Transmission 4.    Each of the above 1-14. Specular light strikes a smooth surface at 60 degrees. At what angle is the light reflected? 1. 30 degrees 2. 60 degrees 3. 90 degrees 4. 120 degrees 1-15. Which  of  the  following  descriptors best defines an object that is opaque? 1. Very hard 2.    Highly  reflective 3. Light stopping 4.    Each of the above 1-16. A change in direction that occurs when light passes from one trans- parent medium into another is known by what term? 1.    Refraction 2. Reflection 3.    Diffraction 4.    Dispersion 1-17. 1-18. 1-19. 1-20. 1-21. 1-22. What  characteristic  of  light allows a lens to form an image? 1.    Reflection 2.    Diffraction 3.    Refraction 4.    Dispersion Of  the  following  wavelengths,  which one has its speed reduced the most when it enters a medium of higher density? 1. Red 2. Yellow 3. Green 4. Blue What term describes the ability of a prism to break up white light into its component colors? 1.    Refraction 2.    Diffraction 3.    Dispersion 4.    Polarization A light ray is bent as it passes very close to an opaque object. What term is used to describe this event? 1. Dispersion 2.    Refraction 3.    Polarization 4.    Diffraction When the motion a light wave is in one direction only, the light is 1. parallel 2. polarized 3. planed 4.    directionless What type of light is seen as glare? 1.    Plane  polarized 2. Diffused 3. Tungsten 4. Fluorescent Learning Objective: Recognize various sources of light and the differences between them. 2