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Physics

What do you think would be the appearance of sunset if the air is highly polluted with suspended particles?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter1: The Nature Of Light

Section: Chapter Questions

Problem 54P: (a) What is the ratio of the speed of red light to violet light in diamond, based on Table 1.2? (b)...

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Concept explainers

Ideal Gas Law

Ideal gas law states that the product of pressure and volume of a gas directly varies with the product of the number of moles, the universal gas constant, and the temperature of the gas.

Question

1. What do you think would be the appearance of sunset if the air is highly polluted with
suspended particles?
2. What are the factors that affect how light is observed by the human eye?
3. Give other examples of dispersion, scattering, diffraction, and interference that can be
observed in everyday life

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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.
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.
(a) What is the ratio of the speed of red light to violet light in diamond, based on Table 1.2? (b) What is this ratio in polystyrene? (c) Which is more dispersive?
1. If the visible light wavelength is changed? What else has changed? 2. A light ray traveling through air meets the boundary with glass. What happens to the light wave? What happens to the angle of refraction? 3. Describe what additive and subtractive color light theory is. If an object is a certain color, what light is it reflecting on? What light is it observing?
ASAP
a. At what angle will light moving from glass (ng=1.5) to air be completely linearly polarized upon reflection? Describe the orientation of the polarization. b. At what incident angle(s) will light moving from glass to air undergo Total Internal Reflection? c. A beam of light having an irradiance of 100 W/m² is incident perpendicularly to the glass-air interface Calculate the reflected irradiance.
3. Horizontally polarized light strikes a horizontal glass table at an angle of 30° (relative to the perpendicular). The glass has an index of refraction of 2.1. What are: a. The angle of reflected light? b. The angle of transmitted light? c. The intensity of the reflected light. d. The intensity of the reflected light? e. Draw a figure showing incident light, reflected light, and transmitted light.
5. When light goes from one material into another material having a higher index of refraction, A. its speed decreases but its wavelength and frequency both increase. B. its speed and wavelength decrease, but its frequency stays the same. C. its speed, wavelength, and frequency all decrease. D. its speed increases, its wavelength decreases, and its frequency stays the same. E. its speed decreases but its frequency and wavelength stay the same.
______1. Which of the following describes Huygen's Principle? a.A wave can produce an interference pattern. b.The speed of light is constant in every direction. c.The angle of incidence is equal to the angle of reflection. d. Every point on a wavefront acts as a source of lots of secondary spherical wavelets, which can therefore interfere with each other.
6. In a room lit by white light, you see a yellow shirt. (You see yellow when both green and red light reach your eyes together). a. What kinds of light is the shirt reflecting? What kinds of light is the shirt absorbing? b. If the room is lit only by red light instead, what will the shirt look like? Explain.
1. The refractive index of seawater is 1.345. What is the angle of refraction when light is incident at an angle of 30.00 ? A. 30 degrees B. 37.4 degrees C.45 degrees D. 21.8 degrees If a photon has an energy of 8.6 * 10-19 J, which region of the electromagnetic spectrum does it fall into? A. Infrared B. Visible region C. Ultraviolet region D. Near infrared