Chapter 18 Practice Problems, Review, and Assessment Section 1 Refraction of Light: Practice Problems 1. A laser beam in air enters ethanol at an angle of incidence of 37.0°. What is the angle of refraction? SOLUTION: ANSWER: 26.3o 2. As light travels from air into water, the angle of refraction is 25.0° to the normal. Find the angle of incidence. SOLUTION: ANSWER: 34.2o 3. Light in air enters a diamond facet at 45.0°. What is the angle of refraction? SOLUTION: eSolutionsANSWER: Manual - Powered by Cognero Page 1 17.0o Section 1 Refraction of Light: Review 7. Index of Refraction A ray of light in air has an angle of incidence of 30.0° on a block of unknown material and an angle of refraction of 20.0°, as shown in Figure 10. What is the index of refraction of the material? SOLUTION: ANSWER: 1.46 9. Speed of Light What is the speed of light in chloroform (n = 1.51)? SOLUTION: ANSWER: 1.99×108 m/s Chapter Assessment Section 1 Refraction of Light: Mastering Concepts 37. How does the angle of incidence compare with the angle of refraction when a light ray passes from air into glass at a nonzero angle? SOLUTION: The angle of incidence is larger than the angle of refraction, because air has a smaller index of refraction. ANSWER: The angle of incidence is larger than the angle of refraction, because air has a smaller index of refraction. 38. How does the angle of incidence compare with the angle of refraction when a light ray leaves glass and enters air at a nonzero angle? SOLUTION: The angle of incidence is smaller than the angle of refraction, because glass has a larger index of refraction. ANSWER: The angle of incidence is smaller than the angle of refraction, because glass has a larger index of refraction. 40. Ranking Task Figure 29 depicts a ray of light traveling from air into several mediums. Rank the mediums according to index of refraction from greatest to least. Specifically indicate any ties. SOLUTION: C > D > B > A ANSWER: C > D > B > A Chapter 18 Practice Problems, Review, and Assessment Section 1 Refraction of Light: Practice Problems 1. A laser beam in air enters ethanol at an angle of incidence of 37.0°. What is the angle of refraction? SOLUTION: ANSWER: 26.3o 2. As light travels from air into water, the angle of refraction is 25.0° to the normal. Find the angle of incidence. SOLUTION: ANSWER: 34.2o 3. Light in air enters a diamond facet at 45.0°. What is the angle of refraction? SOLUTION: eSolutionsANSWER: Manual - Powered by Cognero Page 2 17.0o Section 1 Refraction of Light: Review 7. Index of Refraction A ray of light in air has an angle of incidence of 30.0° on a block of unknown material and an angle of refraction of 20.0°, as shown in Figure 10. What is the index of refraction of the material? SOLUTION: ANSWER: 1.46 9. Speed of Light What is the speed of light in chloroform (n = 1.51)? SOLUTION: ANSWER: 1.99×108 m/s Chapter Assessment Section 1 Refraction of Light: Mastering Concepts 37. How does the angle of incidence compare with the angle of refraction when a light ray passes from air into glass at a nonzero angle? SOLUTION: The angle of incidence is larger than the angle of refraction, because air has a smaller index of refraction. ANSWER: The angle of incidence is larger than the angle of refraction, because air has a smaller index of refraction. 38. How does the angle of incidence compare with the angle of refraction when a light ray leaves glass and enters air at a nonzero angle? SOLUTION: The angle of incidence is smaller than the angle of refraction, because glass has a larger index of refraction. ANSWER: The angle of incidence is smaller than the angle of refraction, because glass has a larger index of refraction. 40. Ranking Task Figure 29 depicts a ray of light traveling from air into several mediums. Rank the mediums according to index of refraction from greatest to least. Specifically indicate any ties. SOLUTION: C > D > B > A ANSWER: C > D > B > A Chapter 18 Practice Problems, Review, and Assessment Section 1 Refraction of Light: Practice Problems 1. A laser beam in air enters ethanol at an angle of incidence of 37.0°. What is the angle of refraction? SOLUTION: ANSWER: 26.3o 2. As light travels from air into water, the angle of refraction is 25.0° to the normal. Find the angle of incidence. SOLUTION: ANSWER: 34.2o 3. Light in air enters a diamond facet at 45.0°. What is the angle of refraction? SOLUTION: eSolutionsANSWER: Manual - Powered by Cognero Page 3 17.0o Section 1 Refraction of Light: Review 7. Index of Refraction A ray of light in air has an angle of incidence of 30.0° on a block of unknown material and an angle of refraction of 20.0°, as shown in Figure 10. What is the index of refraction of the material? SOLUTION: ANSWER: 1.46 9. Speed of Light What is the speed of light in chloroform (n = 1.51)? SOLUTION: ANSWER: 1.99×108 m/s Chapter Assessment Section 1 Refraction of Light: Mastering Concepts 37. How does the angle of incidence compare with the angle of refraction when a light ray passes from air into glass at a nonzero angle? SOLUTION: The angle of incidence is larger than the angle of refraction, because air has a smaller index of refraction. ANSWER: The angle of incidence is larger than the angle of refraction, because air has a smaller index of refraction. 38. How does the angle of incidence compare with the angle of refraction when a light ray leaves glass and enters air at a nonzero angle? SOLUTION: The angle of incidence is smaller than the angle of refraction, because glass has a larger index of refraction. ANSWER: The angle of incidence is smaller than the angle of refraction, because glass has a larger index of refraction. 40. Ranking Task Figure 29 depicts a ray of light traveling from air into several mediums. Rank the mediums according to index of refraction from greatest to least. Specifically indicate any ties. SOLUTION: C > D > B > A ANSWER: C > D > B > A Chapter 18 Practice Problems, Review, and Assessment Section 1 Refraction of Light: Practice Problems 1. A laser beam in air enters ethanol at an angle of incidence of 37.0°. What is the angle of refraction? SOLUTION: ANSWER: 26.3o 2. As light travels from air into water, the angle of refraction is 25.0° to the normal. Find the angle of incidence. SOLUTION: ANSWER: 34.2o 3. Light in air enters a diamond facet at 45.0°. What is the angle of refraction? SOLUTION: eSolutionsANSWER: Manual - Powered by Cognero Page 4 17.0o Section 1 Refraction of Light: Review 7. Index of Refraction A ray of light in air has an angle of incidence of 30.0° on a block of unknown material and an angle of refraction of 20.0°, as shown in Figure 10. What is the index of refraction of the material? SOLUTION: ANSWER: 1.46 9. Speed of Light What is the speed of light in chloroform (n = 1.51)? SOLUTION: ANSWER: 1.99×108 m/s Chapter Assessment Section 1 Refraction of Light: Mastering Concepts 37. How does the angle of incidence compare with the angle of refraction when a light ray passes from air into glass at a nonzero angle? SOLUTION: The angle of incidence is larger than the angle of refraction, because air has a smaller index of refraction. ANSWER: The angle of incidence is larger than the angle of refraction, because air has a smaller index of refraction. 38. How does the angle of incidence compare with the angle of refraction when a light ray leaves glass and enters air at a nonzero angle? SOLUTION: The angle of incidence is smaller than the angle of refraction, because glass has a larger index of refraction. ANSWER: The angle of incidence is smaller than the angle of refraction, because glass has a larger index of refraction. 40. Ranking Task Figure 29 depicts a ray of light traveling from air into several mediums. Rank the mediums according to index of refraction from greatest to least. Specifically indicate any ties. SOLUTION: C > D > B > A ANSWER: C > D > B > A Chapter 18 Practice Problems, Review, and Assessment Section 1 Refraction of Light: Practice Problems 1. A laser beam in air enters ethanol at an angle of incidence of 37.0°. What is the angle of refraction? SOLUTION: ANSWER: 26.3o 2. As light travels from air into water, the angle of refraction is 25.0° to the normal. Find the angle of incidence. SOLUTION: ANSWER: 34.2o 3. Light in air enters a diamond facet at 45.0°. What is the angle of refraction? SOLUTION: eSolutionsANSWER: Manual - Powered by Cognero Page 5 17.0o Section 1 Refraction of Light: Review 7. Index of Refraction A ray of light in air has an angle of incidence of 30.0° on a block of unknown material and an angle of refraction of 20.0°, as shown in Figure 10. What is the index of refraction of the material? SOLUTION: ANSWER: 1.46 9. Speed of Light What is the speed of light in chloroform (n = 1.51)? SOLUTION: ANSWER: 1.99×108 m/s Chapter Assessment Section 1 Refraction of Light: Mastering Concepts 37.