COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 23, Problem 93QAP
To determine
The minimum diameter of raft so that it can obscure the ball from sight
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Calculate the angle of refraction at the air/core interface.
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Explain why an object in water always appears to be at a depth shallower than it actually is?
Can a light ray traveling in air be totally reflected when itstrikes a smooth water surface if the incident angle is chosencorrectly? Explain.
Chapter 23 Solutions
COLLEGE PHYSICS
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- Consider sunlight entering the Earth's atmosphere at sunrise and sunset-that is, at a 90° incident angle. Taking the boundary between nearly emptyspace and the atmosphere to be sudden, calculate the angle of refractionfor sunlight. This lengthens the time the Sun appears to be above thehorizon, both at sunrise and sunset. Now construct a problem in which youdetermine the angle of refraction for different models of the atmosphere,such as various layers of varying density. Your instructor may wish to guideyou on the level of complexity to consider and on how the index ofrefraction varies with air density.arrow_forwardIf b is Brewster's angle for light reflected from the top of an interface between two substances, and b is Brewster's angle for light reflected from below, prove that b+b=90.0.arrow_forwardA ring with a colorless gemstone is dropped into water.The gemstone becomes invisible when submerged. Can it be a diamond? Explain.arrow_forward
- Is it possible that total internal reflection plays a role in rainbows? Explain in terms of indices of refraction and angles, perhaps referring to that shown below. Some of us have seen the formation of a double rainbow; is it physically possible to observe a t - - rainbow? (credit “Chad”/Flickr)arrow_forwardA fish is 3.25 m below the surface of still water (Fig. P38.16). You do not want the fish to see your fishing boat. Is it possible to place your boat so that total internal reflection keeps it hidden from the fish? If so, explain how this is done. If not, explain why not. FIGURE P38.16 Problems 16 and 17.arrow_forwardConsider a common mirage formed by superheated air immediately above a roadway. A truck driver whose eyes are 2.00 m above the road, where n = 1.000 293, looks forward. She perceives the illusion of a patch of water ahead on the road. The road appears wet only beyond a point on the road at which her line of sight makes an angle of 1.20 below the horizontal. Find the index of refraction of the air immediately above the road surface.arrow_forward
- Why is the index of refraction always greater than or equal to 1?arrow_forwardConstruct Your Own Problem Consider sunlight entering the Earth’s atmosphere at sunrise and sunsetthat is, at a 90° incident angle. Taking the boundary between nearly empty space and the atmosphere to be sudden, calculate the angle of refraction for sunlight. This lengthens the time the Sun appears to be above the horizon, both at sunrise and sunset. Now construct a problem in which you determine the angle of refraction (or different models 01 the atmosphere, such as various layers of varying density. Your instructor may wish to guide you on the level of complexity to consider and on how the index at retraction varies with air density.arrow_forwardIs it possible that total internal reflection plays a role in rainbows? Explain in terms of indices of refraction and angles, perhaps referring to Figure 25.48. Some of us have seen the formation of a double rainbow. Is it physically possible to observe a triple rainbow? Figure 25.48 Double rainbows are not a very common observance. (credit: InvictusOU812, Flickr)arrow_forward
- A coin is sitting at the bottom of a glass, 26.7 cm deep below the surface of a clear but unknown liquid. You look at the coin from overhead and with your unparalleled skill at determining distances, you observe it to appear to be 11.3 cm below the surface. What is the index of refraction of the liquid?arrow_forward(no solution needed)A light ray from air is incident to the surface of water ( n=1.33) at an angle of 30°. Relative to the angle of incidence, the angle of reflection _________. is smaller is the same is larger may be any of the above The angle of refraction is equal to _________. 32° 40° 22° 25° What is the critical angle of incidence for water-air interface? 42° 36° 50° 49° If the light ray from air is incident on the surface of a glass ( n= 1.73), what is the speed of light in the glass? 1.25 x 108 m/s 1.73 x 108 m/s 1.8 x 108 m/s 2.7 x 108 m/s The angle of refraction in the glass is _____ degrees. 20 36 30 17arrow_forwardA very large piece of clear ice has a cave man frozen inside it. When viewed at an anglefrom the top of the ice the cave man appears to be 1.00 ft below the surface of the ice.What is the actual depth (in units of inches) of the cave man from the top of the ice?The index of refraction of the ice is 1.309 Do NOT use i for the angle of incidence or r for the refracted anglearrow_forward
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Laws of Refraction of Light | Don't Memorise; Author: Don't Memorise;https://www.youtube.com/watch?v=4l2thi5_84o;License: Standard YouTube License, CC-BY