College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Chapter 25, Problem 25PE
You can determine me index of refraction of a substance by determining its critical angle. (a) What is the index of refraction of a substance that has a critical angle at 68.4° when submerged in water? What is the substance, based on Table 25.1? (b) What would the critical angle be for this substance in air?
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You can determine the index of refraction of a substance by determining its critical angle. (a) What is the index of refraction of a substance that has a critical angle of 68.4º when submerged in water? What is the substance, based on Table 25.1? (b) What would the critical angle be for this substance in air?
What are the governing principles for this problem? What equations can I use to describe what is happening here?
You can determine the index of refraction of a substance by determining its critical angle.
(a)
What is the index of refraction of a substance that has a critical angle of 43.9° when submerged in water? What is the substance, based on the table below?
(b)
What would the critical angle be (in degrees) for this substance in air?
figure qb1e shows a glass tank with a refractive index of 1.47, which contains water with a thick layer of oil floating on top of it. a ray of light is incident on the oil-water boundary at an angle of 44° to the normal. determine the following: (i) the angle of refraction at the oil-water boundary; (ii) the angle of refraction at the water-glass boundary. comment on the value you obtain
refractive index of water: 4/3
refractive index of oil = 1.47
Chapter 25 Solutions
College Physics
Ch. 25 - Using the law of reflection, explain how powder...Ch. 25 - Diffusion by reflection from a rough surface is...Ch. 25 - Why is the index of refraction always greater than...Ch. 25 - Does the fact that the light flash from lightning...Ch. 25 - Will light change direction toward or away from...Ch. 25 - Explain why an object in water always appears to...Ch. 25 - Explain why a person’s legs appeal very short when...Ch. 25 - Prob. 8CQCh. 25 - Suppose light were incident from air onto a...Ch. 25 - A ring with a colorless gemstone is dropped into...
Ch. 25 - A high-quality diamond may be quite clear and...Ch. 25 - Prob. 12CQCh. 25 - The most common type at mirage is an illusion that...Ch. 25 - It can he argued that a flat piece of glass, such...Ch. 25 - You can often see a reflection when looking at a...Ch. 25 - When you focus a camera, you adjust the distance...Ch. 25 - A thin lens has two focal points, one on either...Ch. 25 - Will the focal length of a lens change when it is...Ch. 25 - What are the differences between teal and virtual...Ch. 25 - Can you see a virtual image? Can you photograph...Ch. 25 - Is it necessary to project a real image onto a...Ch. 25 - At what distance is an image always locatedat do,...Ch. 25 - Under what circumstances will an image be located...Ch. 25 - What is meant by a negative magnification? What is...Ch. 25 - Can a case 1 image be larger than the object even...Ch. 25 - Prob. 26CQCh. 25 - Devise an arrangement of mirrors allowing you to...Ch. 25 - If you wish to see your entire body in a flat...Ch. 25 - It can be argued than a flat mirror has an in?nite...Ch. 25 - Why are diverging mirrors often used for rear-view...Ch. 25 - Prob. 1PECh. 25 - Prob. 2PECh. 25 - Light shows staged with lasers use moving mirrors...Ch. 25 - Prob. 4PECh. 25 - What is the speed of light in water? In glycerine?Ch. 25 - What is the speed of light in air? In crown glass?Ch. 25 - Calculate the index of refraction for a medium in...Ch. 25 - In what substance in Table 25.1 is the speed of...Ch. 25 - There was a major collision of an asteroid with...Ch. 25 - Prob. 10PECh. 25 - Components of some computers communicate with each...Ch. 25 - Prob. 12PECh. 25 - Suppose you have an unknown clear substance...Ch. 25 - On the Moon’s surface, lunar astronauts placed a...Ch. 25 - Prob. 15PECh. 25 - Prob. 16PECh. 25 - Unreasonable Results Suppose light travels from...Ch. 25 - Construct Your Own Problem Consider sunlight...Ch. 25 - Unreasonable Results Light traveling from water to...Ch. 25 - Verify that the critical angle for light going...Ch. 25 - (a) At the end of Example 25.4, it was stated that...Ch. 25 - An optical fiber uses flint glass clad with crown...Ch. 25 - At what minimum angle will you get total internal...Ch. 25 - Suppose you are using total internal reflection to...Ch. 25 - You can determine me index of refraction of a...Ch. 25 - Prob. 26PECh. 25 - Prob. 27PECh. 25 - (a) What is me ratio of the speed of red light to...Ch. 25 - A beam of white light goes from air into water at...Ch. 25 - By how much do the critical angles for red (660...Ch. 25 - (a) A narrow beam of light containing yellow (580...Ch. 25 - A parallel beam of light containing orange (610...Ch. 25 - A ray of 610 nm light goes from air into fused...Ch. 25 - A narrow beam of light containing red (660 nm) and...Ch. 25 - Prob. 35PECh. 25 - What is the power in diopters at a camera lens...Ch. 25 - Your camera's zoom lens has an adjustable focal...Ch. 25 - What is the focal length of 1.75 D reading glasses...Ch. 25 - You note that your prescription for new eyeglasses...Ch. 25 - How far from the lens must the film in a camera...Ch. 25 - A certain slide projector has a 100 mm focal...Ch. 25 - A doctor examines a mole with a 15.0 cm focal...Ch. 25 - How far from a piece of paper must you hold your...Ch. 25 - A camera with a 50.0 mm focal length lens is being...Ch. 25 - A camera lens used for taking close-up photographs...Ch. 25 - Suppose your 50.00 mm local length camera lens is...Ch. 25 - (a) What is the focal length of a magnifying glass...Ch. 25 - What magnification will be produced by a lens of...Ch. 25 - In Example 25.7, the magnification of a book held...Ch. 25 - Suppose a 200 mm focal length telephoto lens is...Ch. 25 - A camera with a 100 mm focal length lens is used...Ch. 25 - Combine thin lens equations to show that the...Ch. 25 - What is the focal length of a makeup mirror that...Ch. 25 - Some telephoto cameras use a mirror rather than a...Ch. 25 - (a) Calculate the focal length of the mirror...Ch. 25 - Find the magnification of the heater element in...Ch. 25 - What is the focal length of a makeup mirror that...Ch. 25 - A shopper standing 3.00 m from a convex security...Ch. 25 - An object 1.50 cm high is held 3.00 cm from a...Ch. 25 - Ray tracing for a flat mirror shows that the image...Ch. 25 - Show that for a flat mirror hi= ho, knowing that...Ch. 25 - Use the law of reflection to prove that the focal...Ch. 25 - Referring to the electric room heater considered...Ch. 25 - Consider a 250-W heat lamp fixed to the ceiling in...Ch. 25 - Prob. 1TPCh. 25 - Prob. 2TPCh. 25 - Prob. 3TPCh. 25 - Prob. 4TPCh. 25 - Prob. 5TPCh. 25 - Prob. 6TPCh. 25 - Prob. 7TPCh. 25 - Prob. 8TPCh. 25 - Prob. 9TPCh. 25 - Prob. 10TPCh. 25 - Prob. 11TPCh. 25 - Prob. 12TPCh. 25 - Prob. 13TPCh. 25 - Prob. 14TPCh. 25 - Prob. 15TPCh. 25 - Prob. 16TPCh. 25 - Prob. 17TPCh. 25 - Prob. 18TPCh. 25 - Prob. 19TPCh. 25 - Prob. 20TP
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