College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 25, Problem 8PE
In what substance in Table 25.1 is the
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In what substance in this table is the speed of light 1.985 ✕ 108 m/s?
A light wave has a 604 nm wavelength in the air. Its wavelength in a transparent solid is 416 nm. What is the speed of light (in m/s) in this solid?
A beam of light traveling in air strikes a slab
of transparent material. The incident beam
makes an angle of 60° with the normal, and
the refracted beam make an angle of 50°
with the normal. What is the speed of light in
the transparent material? (c = 3.0 × 108 m/s)
Provide the answer:
x 108 m/s
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 - Why is the front surface of a thermometer curved...Ch. 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 - Is it possible that total internal reflection...Ch. 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 - Figure 25.49 shows a light bulb between two...Ch. 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 - Suppose a man stands in front of a mirror as shown...Ch. 25 - Show that when light reflects from two mirrors...Ch. 25 - Light shows staged with lasers use moving mirrors...Ch. 25 - A flat minor is neither converging nor diverging....Ch. 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 - A scuba diver training in a pool looks at his...Ch. 25 - Components of some computers communicate with each...Ch. 25 - (a) Using information in Figure 25.53, find the...Ch. 25 - Suppose you have an unknown clear substance...Ch. 25 - On the Moon’s surface, lunar astronauts placed a...Ch. 25 - Suppose Figure 25.54 represents a ray of light...Ch. 25 - Figure 25.54 shows a ray of light passing from one...Ch. 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 - A ray of light, emitted beneath the surface of an...Ch. 25 - A light ray entering an optical fiber surrounded...Ch. 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 - A narrow beam of white light enters a prism made...Ch. 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...
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- 13. 650 51° Fig N Figure 2 shows a ray of light x in glass refracted into air. If the speed of light in air is 3.0 x 105 ms'. Which of the following is the correct value for the speed of light in glass? A 2.0 x 10* ms- B 3.0 x 10° ms- 1.8 x 10° ms! D 340 msarrow_forwardQUESTION 14 When certain light rays pass from a vacuum into a block of an unknown material, the measured index of refraction of the material is 1.59 What is the speed of light inside the block? 2.9 x 10° m/s 4.8 x 10 m/s 9.9 x 106 m/s 1.9 x 10° m/s 1.0 x 10° m/sarrow_forwardThe speed of light c in a vacuum is 2.997 × 108 m/s. Given that the index of refraction in benzene is 1.501, what is the speed of light benzene in benzene? Given that the index of refraction in zircon is 1.923, what is the speed of light Uzircon in zircon? Ubenzene- m/s Dzircon = m/sarrow_forward
- A light ray coming from air (n=1.00)is incident on some unknown liquid at an angle of 60.00∘ with respect to the liquid surface normal. The refracted angle is measured to be 25.19 degrees with respect to the liquid surface normal. What is the speed of light inside the liquid (in meters per second)?arrow_forwardThe speed of light in a vacuum (and to a very good approximation in air also) is 3.0 x108 m/s. Light slows down when it enters transparent materials. What is the speed of light in a material with refractive index 1.35? V= m/s Note: you can enter your answer in exponential notation using "E": 1.23 x108 is entered as 1.23E8. What index of refraction corresponds to a speed of light in matter of 1.76 x108 m/s? n =arrow_forwardEx. 16: The speed of light in air is 3 × 108 m/s and that in diamond is 1.4 × 108 m/s. Find R. I. of diamond.arrow_forward
- How long (in ns) does it take light to travel 1.00 m in water (n = 1.33)? (You will need to look up the speed of light in a vacuum.)arrow_forwardThe speed (V) of light in any transparent material is less than the speed of light c in a vacuum: V (any transparent material) = c /n, c = 3 x 10 8 m/s, n = index of refraction of a transparent material What is the speed of light in alcohol? nalcohol = 1.36arrow_forwardLight is traveling through air and hits an iceberg (n = 1.31) at an incident angle of 30.0 ̊. What is the angle of refraction?arrow_forward
- The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46). The ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, vz/vi, is а. 1.99 b. 1.07 с. 0.932 d. 0.511 e. 0.760arrow_forwardThe speed of light c in a vacuum is 2.997 × 10% m/s. Given that the index of refraction in fresh water is 1.333, what is the speed of light Vfresh water in fresh water? Ufresh water m/s Given that the index of refraction in diamond is 2.419, what is the speed of light vdiamond in diamond? Udiamond m/sarrow_forwardEdward and Calil do some experiments to determine the speed of light in a special transparent material. They determine the speed of light to be 0.63c. Edward shines a light thru the material. Determine the critical angle in degrees for the light ray if there is a chamber of air above the material. Please give your answer as a whole number. (c is the speed of light in vacuum)arrow_forward
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