# HW29Sol - Platt David – Homework 29 – Due 4:00 am –...

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Unformatted text preview: Platt, David – Homework 29 – Due: Nov 18 2005, 4:00 am – Inst: Ken Shih 1 This print-out should have 9 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 2) 10 points The speed of light is 3 × 10 8 m / s, the index of refraction of water is 1 . 33, and the index of refraction of glass is 1 . 5. Find the speed of light in water. 1. 1 . 5 × 10 8 m / s 2. 2 . 14286 × 10 8 m / s 3. 2 × 10 8 m / s 4. 1 . 66667 × 10 8 m / s 5. 3 × 10 8 m / s 6. 2 . 25564 × 10 8 m / s correct Explanation: Let : c = 3 × 10 8 m / s , and n w = 1 . 33 . The speed of light in water is v w = c n w = 3 × 10 8 m / s 1 . 33 = 2 . 25564 × 10 8 m / s . 002 (part 2 of 2) 10 points Find the speed of light in glass. 1. 2 . 25564 × 10 8 m / s 2. 1 . 66667 × 10 8 m / s 3. 3 × 10 8 m / s 4. 2 × 10 8 m / s correct 5. 2 . 14286 × 10 8 m / s 6. 1 . 5 × 10 8 m / s Explanation: Let : n g = 1 . 5 . The speed of light in glass is v g = c n g = 3 × 10 8 m / s 1 . 5 = 2 × 10 8 m / s . 003 (part 1 of 2) 10 points A beam of light with a wavelength 840 nm in air travels in water....
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HW29Sol - Platt David – Homework 29 – Due 4:00 am –...

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