n the design of eyeglasses with anti-reflection coating, the most important aspect to make right is the: a)coating thickness. b)coating color. c)exact light frequency. d)reflection coefficient
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In the design of eyeglasses with anti-reflection coating, the most important aspect to make right is the:
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- The display windows of some department stores are slanted slightly inward at the bottom. This is to decrease the glare from streetlights or the Sun, which would make it difficult for shoppers to see the display inside. Sketch a light ray reflecting from such a window to show how this technique works.What's the index of refraction of a material for which the speed of light within its 2.10x108 m/s?A thin prism of 5° angle gives a deviation of 3.2°. What is the value of refractive index of the material of the prism?
- 1) What is the speed of light in a glass(n=1.5)? 2) A man 1.80 m tall stands in front of a vertical plane mirror. What is the minimum height of the mirror, if he is to see his whole body? Assume his eyes are 10 cm below the top of his head.A ray of light passes through a prism, making the minimum angle of deviation. The rays enter and emerge at 7° from the normal to the surface. What is the index of refraction of the material, if the prism angle is 50°?Optical fibers are a central part of technology for rapid information transmission with a high level of efficiency. A new type of optical fiber is crafted with an index of refraction n = less than that of water in the vicinity of room temperature, where NH2O fact that n < nH20 potentially problematic if the fiber should be submerged? 1.25 = 1.33. Why is the O A. Total internal reflection would be frustrated, allowing loss of signal. O B. Internal reflection would actually be enhanced, so there is no problem. C. Electric eels might have free internet access.
- A gemstone (n = 1.72) is submerged in oil (n = 1.45). A light ray in the gem is incident onto the surface at 45 degrees. Will the light refract into the oil? Yes NoWhat happens to a light wave when it is reflected off the surface of a material with a LOWER index of refraction? A) it reflects with its phase shifted by (pi) B) there is no reflection C) it reflects with its phase shifted by (pi/2) D) it reflects with its phase unshiftedIn an ultra-low-temperature experiment, a collection of atoms enter a special state called a Bose-Einstein condensate in which the index of refraction is 1.60 × 107. What is the speed of light in this condensate?
- John likes to collect marbles and places a rare marble in a block of plastic. It seems that the marble is 2.0 cm within the plastic. (Index of refraction of the plastic = 1.60) What is the actual distance of the marble beneath the surface?It is a technology that allows information to be transmitted over great distances as light pulses via strands of glass or plastic fiber.