University Physics Volume 3
17th Edition
ISBN: 9781938168185
Author: William Moebs, Jeff Sanny
Publisher: OpenStax
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Textbook Question
Chapter 1, Problem 37P
A flat mirror Is neither converging nor diverging. To prove this, consider two rays originating from the same point and diverging at an angle (I (see below). Show that after striking a plane mirror, the angle between their directions remains 0.
1.3 Refraction
Unless otherwise specified, for problems 1 through 10, the indices of refraction of glass and water should be taken to be 1.50 and 1.333, respectively.
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The reflecting surfaces of two intersecting flat mirrors are at an angle 0 (0° < 0 < 90°) as shown in the figure below. For a light
ray that strikes the horizontal mirror, show that the emerging ray will intersect the incident ray at an angle ß = 180° - 20. Assume
that all angles are expressed in degrees and define the angles of incidence for the two reflections to be a and ô with respect to the
normals.
Calculate ß in terms of a and 8.
B =
Now calculate 0 in terms of a and 8.
Combine the previous two results in order to obtain an expression for ß in terms of 0.
B = 180 – 20
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The reflecting surfaces of two intersecting flat mirrors are at an angle 0 (0° < 0 < 90°) as shown in the figure below. For a light ray that strikes the horizontal mirror, show
that the emerging ray will intersect the incident ray at an angle B = 180° - 20. Assume that all angles are expressed in degrees and define the angles of incidence for the
two reflections to be a and 8 with respect to the normals.
It was once suggested that the mirror for an astronomical telescope could be produced by rotating a flat disk of mercury at a prescribed angular velocity ω about a vertical axis.(a) What is the equation of reflection (free) surface so obbtained?(b) How fast must the disc be rotated to produce a 10cm focal length mirror?
Chapter 1 Solutions
University Physics Volume 3
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