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(Problems 9, 10 and 11 refer to the same material.) 9. What is the speed of...

(Problems 9, 10 and 11 refer to the same material.) 9. What is the speed of light in a material with an index of refraction of 1.72?

10. For the material in the previous problem, light with a wavelength of 560nm is incident on it from a vacuum. What is the wavelength of the light within the material?

11. For the material in the previous problem, light with a frequency of 550 THz is incident on it from a vacuum. What is the frequency of the light within the material?

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