TB_chapter22

# TB_chapter22 - Chapter 22 Reflection and Refraction of...

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Chapter 22, Reflection and Refraction of Light C HAPTER 22 Conceptual Questions C1. Three flat layers of transparent material are stacked upon one another. The top layer has index of refraction n 1 , the middle has n 2 and the bottom one has n 3 . If n 1 < n 2 < n 3 , at what angle of incidence will a ray of light traverse the three layers in a single straight line? a. ) / 1 ( sin 1 1 n i - = θ b. ( 29 ) /( 1 sin 3 2 1 1 n n n i + + = - c. ) ( tan 3 2 1 1 n n n i + + = - d. There is such an angle, but it is not given. C2. Three flat layers of transparent material are stacked upon one another. The top layer has index of refraction n 1 , the middle has n 2 and the bottom one has n 3 . If n 1 > n 2 > n 3 , and if a ray of light strikes the top layer at an angle of incidence 30 i ° = , in which layer is the angle of refraction the greatest? a. the top layer b. the middle layer c. the bottom layer d. Once the ray enters the touching layers, the angle of refraction remains constant. C3. Three flat layers of transparent material are stacked upon one another. The top layer has index of refraction n 1 , the middle n 2 and the bottom one n 3 . If n 1 > n 2 > n 3 , and a ray of light in air strikes the top layer, at which surface given can total internal reflection occur first? a. the top surface b. the surface between materials with indices n 1 and n 2 c. the surface between materials with indices n 2 and n 3 d. Total internal reflection cannot occur at any of these surfaces. C4. Light of colors 1 and 2 are sent through a prism and the rays of light of color 2 bend more. Which of the following is not true? a. The index of refraction for color 2 is greater than that for color 1. b. The two colors of light have different frequencies associated with them. c. The speed of light for color 2 is greater than that for color 1 in this prism. d. The wavelength for color 1 is different than that for color 2 in this prism. C5. White light is sent through a prism, and the various colors are separated in typical fashion. Which of the following colors would have the highest index of refraction in this prism? a. red b. green c. yellow d. blue 22.1 The Nature of Light 123

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Chapter 22, Reflection and Refraction of Light 1. According to the photon energy formula, tripling the frequency of the radiation from a monochromatic source will change the energy content of the individually radiated photons by what factor? a. 0.33 b. 1.0 c. 1.73 d. 3.0 2. Tripling the wavelength of the radiation from a monochromatic source will change the energy content of the individually radiated photons by what factor? a. 0.33 b. 1.0 c. 1.73 d. 3.0 3. Photon A has an energy of 2.0 × 10 -19 J. Photon B has 4 times the frequency of Photon A. What is the energy of Photon B?
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## This note was uploaded on 01/06/2012 for the course PHYS 201 taught by Professor Coffin during the Spring '09 term at Oregon State.

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TB_chapter22 - Chapter 22 Reflection and Refraction of...

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