7. The speed of light inside some material is reduced by 25% from the speed in vacuum. What is the index of refraction of the material? a) n = 3 b) n = 4 c) n = = 314 d) Something else. (Please explain.)
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- 1) Calculate the speed of light in ice. Index of refraction of ice is nice = 1.31. (Express to 3 sig fig). 2) Calculate the speed of light in plexiglass. Index of refraction of plexiglass is nplexiglass = 1.49. (Express to 3 sig fig). 3) Calculate the speed of light in diamond. Index of refraction of diamond is ndiamond = 2.42. (Express to 3 sig fig). 4) Calculate the speed of light in water. Index of refraction of water is nwater = 1.33. (Express to 3 sig fig). 5) Calculate the speed of light in crown glass. Index of refraction of crown glass is ncrown glass = 1.52. (Express to 3 sig fig).QUESTION 5 The speed of light in a substance is 2.46 x 108 m/s. What is the index of refraction of the substance?When light passing through a prism undergoes dispersion, the effect is a result of:a. different wavelengths traveling at different speeds.b. different wavelengths having different indices of refraction.c. different wavelengths refracting differently.d. All of the above
- 1. Which law gives the relationship between refractive index of the dielectric? a) Law of reflection b) Law of refraction (Snell's Law) c) Millman's Law d) Huygen's Law 2. Light incident on fibers of angles_ the fiber. a) Less than b) Greater than c) Equal to d) Less than and equal to 3. The ratio of speed of light in air to the speed of light in another medium is called as a) Speed factor b) Dielectric constant c) Reflection index d) Refraction index the acceptance angle do not propagate into 4.When A is the optical wavelength in vacuum, k is given by k=20/A. What does k stand for in the above equation? a) Phase propagation constant b) Dielectric constant c) Boltzmann's constant d) Free-space constant 5.Optical fibers suffer radiation losses at bends or curves on their paths. a) True b) False 6.The lower energy level contains more atoms than upper level under the conditions of a) Isothermal packaging b) Population inversion c) Thermal equilibrium d) Pumping1. If there are two materials with different densities, which of the following statements is true? a. Light travels faster in the material with higher density b. Light travels faster in the material with lower density c. Light travels the same speed in both materials 2. When a light ray traveling in a higher index of refraction material passes into a lower index of refraction material, the light ray a. Travels in a straight line without changing direction b. Bends toward the direction perpendicular to the surface between the materials c. Bends away from the direction perpendicular to the surface between the materials 3. You are standing 1 m directly in front of a flat mirror. Which of the following is true? a. You are 2 m away from your image formed by the mirror b. You are 1 m away from your image formed by the mirror c. You are 0 m away from your image formed by the mirror d. You are between 1 and 2 m away from your image formed by the mirror e. You are…