The frequency of a light wave in air is 4.6 x 1014 Hz. What is the wavelength of this wave after it enters a pool of water? A. 300 nm B. 490 nm C. 650 nm D. 870 nm
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- 1. Horizontally polarized light is incident on a polarizing filter with an axis of polarization that makes an angle of 32° with the vertical. a. What percentage of the incident light is blocked by the polarizer? b. What angle should the polarizer make with the vertical to block exactly half of the incident light?Light from a He-Ne laser of wavelength is 633 nm passes through a circular aperture of diameter 114 mm. The width of the central maximum on the screen is 54.2 mm. How far is a screen from the circular aperture? A. 1.54 m B. 4.88 m C. 8.00 m D. 9.76 m E. 4.00 mWhich of the following is TRUE regarding reflection and refraction? a. Reflection can be explained by the particle nature of light while refraction cannot. b. Refraction can be explained by the wave nature of light while reflection cannot. c. Reflection and refraction can be explained by both the wave and particle nature of light. d. Reflection and refraction can only be explained by the wave nature of light. The perception of color does not correspond to a unique set of wavelengths. The human eye distinguishes several hundreds of colors and shades. The eye has only three separate types of visual signals. So the different signal perceptions of colors are combinations of these three visual signals. Perception of colors depends upon the relative stimulation of the three color sensitive cells in the retina of the eye. What are the requirements for perceiving colors? a. Eye and light b. Eye, object, and light c. Eye, light, and shadow d. Eye, light, and medium
- Unpolarized light of intensity 150 W/m2 passes through two ideal polarizing filters. The polarizing axes of the filters are indicated by the dashed lines. What is the intensity of light at point B? A. 8.77 W/m2 B. 14.4 W/m2 C. 37.5 W/m2 D. 66.2 W/m2 E. 109 W/m2A glass lens has a coating placed on it. If a film of magnesium fluoride, n = 1.38, is placed on the glass, n = 1.52, how thick should the layer be to keep yellow-green light from being reflected? A. 92 nm B. 101 nm C. 140 nm D. 192 nm4. Figure CQ22.4 shows light from material A with index of refraction nд entering materials B and C with indices of refraction NB and nc Rank the three indices of refraction from largest to smallest. a. nд, nB , nc b. nB, nc, NA c. nc, WA 9 nB d. nB NA, 2 nc e. nc, nB, NA Figure CQ22.4 NA ng 55.0° i 55.0° nc