Physics for Scientists and Engineers, Volume 1, Chapters 1-22

8th Edition

ISBN: 9781439048382

Author: Raymond A. Serway, John W. Jewett

Publisher: Cengage Learning

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Textbook Question

Chapter 35, Problem 35.20P

Two flat, rectangular mirrors, both perpendicular to a horizontal sheet of paper, are set edge to edge with their reflecting surfaces perpendicular to each other. (a) A light ray in the plane of the paper strikes one of the mirrors at an arbitrary angle of incidence θ₁. Prove that the final direction of the ray, after reflection from both mirrors, is opposite its initial direction. (b) What If? Now assume the paper is replaced with a third flat mirror, touching edges with the other two and perpendicular to both, creating a comer-cube retroreflector (Fig. 34.8a). A ray of light is incident from any direction within the octant of space bounded by the reflecting surfaces. Argue that the ray will reflect once from each mirror and that its final direction will be opposite its original direction. The Apollo 11 astronauts placed a panel of corner-cube retroreflectors on the Moon. Analysis of timing data taken with it reveals that the radius of the Moon’s orbit is increasing at the rate of 3.8 cm/yr as it loses kinetic energy because of tidal friction.

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Chapter 35, Problem 35.19P

Chapter 35, Problem 35.21P

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Chapter 35 Solutions

Physics for Scientists and Engineers, Volume 1, Chapters 1-22

Ch. 35 - Prob. 35.1QQ Ch. 35 - If beam is the incoming beam in Figure 34.10b,...Ch. 35 - Light passes from a material with index of...Ch. 35 - In photography, lenses in a camera use refraction...Ch. 35 - Prob. 35.5QQ Ch. 35 - In each of the following situations, a wave passes...Ch. 35 - A source emits monochromatic light of wavelength...Ch. 35 - Carbon disulfide (n = 1.63) is poured into a...Ch. 35 - A light wave moves between medium 1 and medium 2....Ch. 35 - What happens to a light wave when it travels from...

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Solution Summary: The author explains that the final direction of a ray, after reflection from the two flat and perpendicular mirrors is the opposite of the initial direction.

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Chapter 35 Solutions