EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Textbook Question
Chapter 32, Problem 1Q
What would be the appearance of the Moon if it had (a) a rough surface; (b) a polished mirrorlike surface?
(a)
Expert Solution
To determine
The appearance of the moon if it had rough surface.
Answer to Problem 1Q
The appearance of the moon will be same as it looks now, because it had rough surface now also.
Explanation of Solution
If the moon had rough surface it will absorb light at some points and it will reflect light from some points, if the surface of the moon is completely rough and if it does not reflect any light then, it will not be visible to people on Earth.
During sometimes in the month, lit side of the portions of moon is visible and this happens because all parts of moon is reflecting back sunlight.
There are many such spots in the moon and every spot is a point source of light, which send reflections back to Earth from any part that is lit by sunlight.
Conclusion:
Thus, the appearance of the moon will be same as it looks now, because it had rough surface now also.
(b)
Expert Solution
To determine
The appearance of the moon if it had a polished mirror like surface .
Answer to Problem 1Q
If the moon had polished mirror like surface then it would be invisible to us.
Explanation of Solution
If the moon had polished mirror like surface then it would be invisible to us and only one small spot is visible that will be an image of a sun reflected by moon as it will behave like a mirror.
Some tiny small spots are also visible that would be the light from the stars reflected from the surface of the moon.
Even the portion of Earth which has light is also visible as one tiny spot.
The moon will behave like a mirror and it will reflect the light from everywhere which is reaching the moon and that light is visible on the surface as tiny spots.
Conclusion:
Thus, if the moon had polished mirror like surface then it would be invisible to us.
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Chapter 32 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 32 - What would be the appearance of the Moon if it had...Ch. 32 - Archimedes is said to have burned the whole Roman...Ch. 32 - What is the focal length of a plane mirror? What...Ch. 32 - An object is placed along the principal axis of a...Ch. 32 - Using the rules for the three rays discussed with...Ch. 32 - Prob. 6QCh. 32 - If a concave mirror produces a real image, is the...Ch. 32 - Prob. 8QCh. 32 - When you look at the Moons reflection from a...Ch. 32 - How can a spherical mirror have a negative object...
Ch. 32 - Prob. 11QCh. 32 - When you look down into a swimming pool or a lake,...Ch. 32 - Draw a ray diagram to show why a stick looks bent...Ch. 32 - (I) When you look at yourself in a 60-cm-tall...Ch. 32 - (II) Show that if two plane mirrors meet at an...Ch. 32 - (II) The block of glass (n = 1.5) shown in cross...Ch. 32 - (II) Show in general that for a light beam...Ch. 32 - (III) A light ray is incident on a flat piece of...Ch. 32 - (I) By what percent is the speed of blue light...Ch. 32 - (I) A light beam strikes a piece of glass at a...Ch. 32 - (II) A parallel beam of light containing two...Ch. 32 - Two identical concave mirrors are set facing each...Ch. 32 - A kaleidoscope makes symmetric patterns with two...
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