Physics: Principles with Applications
6th Edition
ISBN: 9780130606204
Author: Douglas C. Giancoli
Publisher: Prentice Hall
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Chapter 23, Problem 3Q
To determine
To discuss:
That a plane mirror appears to reverse left and right not reverse up and downand that the front to back is also reversed and also to discuss what happens if, while standing, you look up vertically at a horizontal mirror on the ceiling.
Expert Solution & Answer
Answer to Problem 3Q
Solution:
The mirror actually doesn’t reverse right and left, either, just as it doesn’t reverse up and down.The directions left and right are simply relative and swap once you turn 180 degrees. Also, if the mirror is held over the head, it would "reverse" vertically, and not horizontally.
Explanation of Solution
The image formation in a plain mirror:
The image formed by a plane mirror is always virtual (meaning that the light rays do not actually come from the image), upright, and of the same shape and size as the object it is reflecting. However, the image is a laterally-inverted "mirror image" of the object.
Lateral inversionmeans the apparent reversal of the mirror image's left and right when compared with the object. "Lateral" just means "sideways".... Consider your own mirror image. You don't easily perceive your front and back as reversed even though that is what happens when you face a mirror.
When the mirror is vertical to the object:
With the mirror vertical, the vertical status of the image is preserved, top is still top. If you move your right hand, the "mirror hand" that moves is still on your right side. There's no reversal in that sense. However, your right hand is perceived as the left hand of your image. The perceived reversal of intrinsic left and right is "lateral inversion". We often perceive these left-right mirror reversals. So, that's why mirror reversals are called "lateral inversion", even though that's not usually what the mirror does directly.
When the mirror is horizontal to the object:
If the mirror is held over the head, it would "reverse" vertically, and not horizontally.
Chapter 23 Solutions
Physics: Principles with Applications
Ch. 23 - Prob. 1QCh. 23 - What is the focal length of a plane mirror? What...Ch. 23 - Prob. 3QCh. 23 - Prob. 4QCh. 23 - Prob. 5QCh. 23 - Prob. 6QCh. 23 - Prob. 7QCh. 23 - Prob. 8QCh. 23 - Prob. 9QCh. 23 - Prob. 10Q
Ch. 23 - Prob. 11QCh. 23 - You look into an aquarium and view a fish inside....Ch. 23 - Prob. 13QCh. 23 - Prob. 14QCh. 23 - A child looks into a pool to see how deep it is....Ch. 23 - Prob. 16QCh. 23 - Prob. 17QCh. 23 - Prob. 18QCh. 23 - Prob. 19QCh. 23 - Prob. 20QCh. 23 - Prob. 21QCh. 23 - Prob. 22QCh. 23 - Prob. 23QCh. 23 - Prob. 24QCh. 23 - Prob. 25QCh. 23 - Prob. 26QCh. 23 - Prob. 27QCh. 23 - Prob. 28QCh. 23 - Prob. 29QCh. 23 - Prob. 30QCh. 23 - Prob. 31QCh. 23 - Prob. 32QCh. 23 - Prob. 33QCh. 23 - Prob. 1PCh. 23 - Prob. 2PCh. 23 - Two plane mirrors meet at a 1350 angle, Fig....Ch. 23 - Prob. 4PCh. 23 - Prob. 5PCh. 23 - Prob. 6PCh. 23 - Suppose you are 94 cm from a plane mirror. What...Ch. 23 - A solar cooker, really a concave mirror pointed at...Ch. 23 - How far from a concave mirror (radius 21.0 cm)...Ch. 23 - A small candle is 38 cm from a concave mirror...Ch. 23 - An object 3.0 mm high is placed 16 cm from a...Ch. 23 - A dentist wants a small mirror that, when 2.00 cm...Ch. 23 - You are standing 3.4 m from a convex security...Ch. 23 - The image of a distant tree is virtual and very...Ch. 23 - Prob. 15PCh. 23 - Prob. 16PCh. 23 - Prob. 17PCh. 23 - Some rearview mirrors produce images of cars to...Ch. 23 - Prob. 19PCh. 23 - Prob. 20PCh. 23 - Prob. 21PCh. 23 - Prob. 22PCh. 23 - Prob. 23PCh. 23 - Prob. 24PCh. 23 - Prob. 25PCh. 23 - Prob. 26PCh. 23 - Prob. 27PCh. 23 - Prob. 28PCh. 23 - Prob. 29PCh. 23 - Prob. 30PCh. 23 - Prob. 31PCh. 23 - Rays of the Sunare seen to make a 36.0° angle to...Ch. 23 - Prob. 33PCh. 23 - A beam of light in air strikes a slab of glass (n...Ch. 23 - Prob. 35PCh. 23 - Prob. 36PCh. 23 - Prob. 37PCh. 23 - Prob. 38PCh. 23 - Prob. 39PCh. 23 - Prob. 40PCh. 23 - 39. (Ill) (a) What is the minimum index of...Ch. 23 - 40. (Ill) A beam of light enters the end of an...Ch. 23 - Prob. 43PCh. 23 - Prob. 44PCh. 23 - Prob. 45PCh. 23 - Prob. 46PCh. 23 - Prob. 47PCh. 23 - Prob. 48PCh. 23 - Prob. 49PCh. 23 - Prob. 50PCh. 23 - A stamp collector uses a converging lens with...Ch. 23 - Prob. 52PCh. 23 - Prob. 53PCh. 23 - Prob. 54PCh. 23 - Prob. 55PCh. 23 - Prob. 56PCh. 23 - Prob. 57PCh. 23 - Prob. 58PCh. 23 - Prob. 59PCh. 23 - Prob. 60PCh. 23 - A diverging lens with f= -36.5 cm is placed 14.0...Ch. 23 - Prob. 62PCh. 23 - Prob. 63PCh. 23 - Two lenses, one converging with focal length 20.0...Ch. 23 - Prob. 65PCh. 23 - A double concave lens has surface radii of 33.4 cm...Ch. 23 - Prob. 67PCh. 23 - Prob. 68PCh. 23 - Prob. 69PCh. 23 - Prob. 70PCh. 23 - Prob. 71PCh. 23 - Prob. 72GPCh. 23 - Prob. 73GPCh. 23 - Prob. 74GPCh. 23 - The critical angle of a certain piece of plastic...Ch. 23 - Prob. 76GPCh. 23 - Prob. 77GPCh. 23 - Prob. 78GPCh. 23 - Prob. 79GPCh. 23 - Prob. 80GPCh. 23 - 77
77. If the apex of a prism is ? = 75o (see...Ch. 23 - Prob. 82GPCh. 23 - Prob. 83GPCh. 23 - Prob. 84GPCh. 23 - Prob. 85GPCh. 23 - Prob. 86GPCh. 23 - Prob. 87GPCh. 23 - Figure 23-65is a photograph of an eyeball with the...Ch. 23 - Prob. 89GPCh. 23 - Prob. 90GPCh. 23 - 87 ‘(a) Show that if two thin lenses of focal...Ch. 23 - Prob. 92GPCh. 23 - Prob. 93GPCh. 23 - Prob. 94GP
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