1. Monochromatic light is light of a single A. Wavelength B. Frequency C. Color D. All of these E. None of these
2. Consider the interference colors seen in a film of gasoline on a wet street. The function of the water is to provide A. Means of spreading the gasoline into a film. B. Means of slowing the rapid evaporation of gasoline C. Chemical bond with the gasoline D. Second reflecting surface E. All of these
3. Interference effects are less visible for thick films because the reflected waves A. From the bottom surface are too dim B. Become too dispersed. C. All end up in phase with each other. D. Are too displaced to interfere
4. Lens manufacturers use refractive index, and radii of curvature of the two surfaces to determine the focal length of a given lens. A. True B. False
5. Power of a lens is directly proportional to its focal length A. True B. False
1. Monochromatic light is light of a single A. Wavelength B. Frequency C. Color D. All of these E. None of these
2. Consider the interference colors seen in a film of gasoline on a wet street. The function of the water is to provide A. Means of spreading the gasoline into a film. B. Means of slowing the rapid evaporation of gasoline C. Chemical bond with the gasoline D. Second reflecting surface E. All of these
3. Interference effects are less visible for thick films because the reflected waves A. From the bottom surface are too dim B. Become too dispersed. C. All end up in phase with each other. D. Are too displaced to interfere
4. Lens manufacturers use refractive index, and radii of curvature of the two surfaces to determine the focal length of a given lens. A. True B. False
5. Power of a lens is directly proportional to its focal length A. True B. False
