propagation. a. transverse b. longitudinal c. infrared rays d. gamma rays 2. Refraction refers to a. change in speed of light when it comes from one medium to another b. turning back of the light to the original medium from where it has been traveling after hitting a surface c. as a wave which includes scattering, diffraction, polarization, dispersion, transmission, and absorption of light d. When light speeds up in passing from one medium to another, it is bounced from the normal. When light speeds up, it is bounced towards the normal

propagation. a. transverse b. longitudinal c. infrared rays d. gamma rays 2. Refraction refers to a. change in speed of light when it comes from one medium to another b. turning back of the light to the original medium from where it has been traveling after hitting a surface c. as a wave which includes scattering, diffraction, polarization, dispersion, transmission, and absorption of light d. When light speeds up in passing from one medium to another, it is bounced from the normal. When light speeds up, it is bounced towards the normal

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter37: Diffraction Patterns And Polarization

Section: Chapter Questions

Problem 45AP

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Part of the light passing through the air is scattered in all directions by the molecules comprising the atmosphere. The wavelengths of visible Light are larger than molecular sizes, and the scattering is strongest for wavelengths of light closest to sizes of molecules. (a) Which of the main colors of light is scattered the most? (b) Explain why this would give the sky its familiar background color at midday.
What type of experimental evidence indicates that light is a wave?
In each of the following situations, a wave passes through an opening in an absorbing wall. Rank the situations in order from the one in which the wave is best described by the ray approximation to the one ill which the wave coming through the opening spreads out most nearly equally in all directions in the hemisphere beyond the wall, (a) The sound of a low whistle at 1 kHz passes through a doorway 1 m wide, (b) Red light passes through the pupil of your eye. (c) Blue light passes through the pupil of your eye. (d) The wave broadcast by an AM radio station passes through a doorway 1 m wide, (e) An x-ray passes through the space between bones in your elbow Joint.
(a) What is the minimum angular spread of a 633-nm wavelength He-Ne laser beam that is originally 1.00 mm in diameter? (b) If this laser is aimed at a mountain cliff 15.0 km away, how big will the illuminated spot be? (c) How big a spot would be illuminated on the Moon, neglecting atmospheric effects? (This might be done to hit a corner reflector to measure the round-trip time and, hence, distance.) Explicitly show how you follow the steps in Problem-Solving Strategies for Wave Optics.
A film of' oil on a puddle in a parking lot shows a variety of bright colors in swirled patches. What can you say about the thickness of the oil film? (a) It is much less than the wavelength of visible light. (b) It is on the same order of magnitude as the wavelength of visible light. (c) It is much greater than the wavelength of visible light. (d) It might have any relationship to the wavelength of visible light.
A pure red object on a black background seems to disappear when illuminated with pure green light. Explain why.
The Tunguska event. On June 30, 1908, a meteor burned up and exploded in the atmosphere above the Tunguska River valley in Siberia. It knocked down trees over thousands of square kilometers and started a forest fire, but produced no crater and apparently caused no human casualties. A witness sitting on his doorstep outside the zone of falling trees recalled events in the following sequence. He saw a moving light in the sky, brighter than the Sun and descending at a low angle to the horizon. He felt his face become warm. He felt the ground shake. An invisible agent picked him up and immediately dropped him about a meter from where he had been seated. He heard a very loud protracted rumbling. Suggest an explanation for these observations and for the order in which they happened.
The speed of the Earth in its orbit is 29.8 km/s. If that is the magnitude of the velocity v of the ether wind in Figure P39.3, find the angle between the velocity of light c in vacuum and the resultant velocity of light if there were an ether.
3. You're in a room (with no windows) that is lit up by "white" light coming from a light bulb. a. What colors of light are being produced by the light bulb? (Hint: the possible colors are red, green, and blue) b. A toy fire truck in the room appears red. What colors of light is the truck reflecting? What colors of light is the truck absorbing? Explain. c. The walls of the room appear blue. What colors of light are the walls reflecting? What colors of light are the walls absorbing? Explain. Focus F11 F12 Insert PriSc F5 F6 F7 F8 F9 F10 F4 * & Ba 5 6. 7 8 9. R T. Y
4. You are in a room lit only by yellow light. A chair in that room looks red to you. (Your eyes see red + green light as yellow; your eyes see red+ blue light as magenta; your eyes see green and blue light as cyan) a. What colors of light is the chair reflecting in the yellow room? What colors of light is the chair absorbing in that room? Explain. b. You then move the chair out into the sunlight. What possible colors could the chair be in the sunlight? Explain.
Which of the following is TRUE regarding reflection and refraction? a. Reflection can be explained by the particle nature of light while refraction cannot. b. Refraction can be explained by the wave nature of light while reflection cannot. c. Reflection and refraction can be explained by both the wave and particle nature of light. d. Reflection and refraction can only be explained by the wave nature of light. The perception of color does not correspond to a unique set of wavelengths. The human eye distinguishes several hundreds of colors and shades. The eye has only three separate types of visual signals. So the different signal perceptions of colors are combinations of these three visual signals. Perception of colors depends upon the relative stimulation of the three color sensitive cells in the retina of the eye. What are the requirements for perceiving colors? a. Eye and light b. Eye, object, and light c. Eye, light, and shadow d. Eye, light, and medium
Refraction of Light The speed of light in water is (3/4)c. Determine the refractive index of water. a. 3.3333 4.3333 2.3333 1.3333 b. A glass plate is 0.60 cm thick and has a refractive index of 1.55. How long does it take for a pulse of light incident normally to pass through the plate? 3.5023 x 10-11s C. 3.9921 x 10-1¹s 3.1021 x 10-11s d. 3.7221 x 10-11s a. b. The wavelength of light in glass (n=1.5) is λ = 450 nm. What is the wavelength of this light in diamond (n=2.42)? a. 288.2566 nm C. 278.9256 nm b. 378.8656 nm d. 318.9746 nm Light strikes an air water boundary with an angle of incidence of 30". Calculate the refracted light ray in water. 22.082° 12.082° C. d. a. 32.082° b. 2.082⁰ A layer of oil (n=1.45) floats on water (n=1.33). A ray of light shines onto the oil with an incidence angle of 40°. Find the angle the ray makes in the water. a. b. D 28.901⁰ 38.901⁰ C. d. C. d. 18.901⁰ 8.901⁰ Air Water