Chapter 38: Photons and Matter Waves

Expert-verified

Pages: 1153 - 1185

Book edition 10th Edition

Author(s) David Halliday

Pages 1328 pages

ISBN 9781118230718

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106 Questions for Chapter 38: Photons and Matter Waves

A satellite in Earth orbit maintains a panel of solar cells of area 2.60m2perpendicular to the direction of the Sun’s light rays. The intensity of the light at the panel is 1.39kW/m2. (a) At what rate does solar energy arrive at the panel? (b) At what rate are solar photons absorbed by the panel? Assume that the solar radiation is monochromatic, with a wavelength of 550 nm, and that all the solar radiation striking the panel is absorbed. (c) How long would it take for a “mole of photons” to be absorbed by the panel?

Found on Page 1181
X rays of wavelength 0.0100 nm are directed in the positive direction of an axis onto a target containing loosely bound electrons. For Compton scattering from one of those electrons, at an angle of 180°,what are (a) the Compton shift, (b) the corresponding change in photon energy, (c) the kinetic energy of the recoiling electron, and (d) the angle between the positive direction of the axis and the electron’s direction of motion?

Found on Page 1181
An ultraviolet lamp emits light of wavelength 400 nm at the rate of 400 W. An infrared lamp emits light of wavelength 700 nm, also at the rate of 400 W. (a) Which lamp emits photons at the greater rate and (b) what is that greater rate?

Found on Page 1182
An ultraviolet lamp emits light of wavelength 400 nm at the rate of 400 W. An infrared lamp emits light of wavelength 700 nm, also at the rate of 400 W. (a) Which lamp emits photons at the greater rate and (b) what is that greater rate?

Found on Page 1181
Under ideal conditions, a visual sensation can occur in the human visual system if the light of wavelength 550nm is absorbed by the eye’s retina at a rate as low as 100 photons per second. What is the corresponding rate at which energy is absorbed by the retina?

Found on Page 1182
An electron and a proton have the same kinetic energy. Which has the greater de Broglie wavelength?

Found on Page 1181
A special kind of lightbulb emits monochromatic light of wavelength 630 nm. Electrical energy is supplied to it at the rate of 60W, and the bulb is 93% efficient at converting that energy to light energy. How many photons are emitted by the bulb during its lifetime of 730h?

Found on Page 1182
The following nonrelativistic particles all have the same kinetic energy. Rank them in order of their de Broglie wavelengths, greatest first: electron, alpha particle, neutron.

Found on Page 1181
A light detector has an absorbing area of 2.00×10-6m2 and absorbs 50% of the incident light, which is at a wavelength 600nm. The detector faces an isotropic source, 12.0 m from the source. The energy E emitted by the source versus time t is given in Fig. 38-26 ( Es=7.2nJ, ts=2.0s ). At what rate are photons absorbed by the detector?

Found on Page 1182
Figure 38-24 shows an electron moving through several regions where uniform electric potentials V have been set up. Rank the three regions according to the de Broglie wavelength of the electron there, greatest first.

Found on Page 1181

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Chapter 38: Photons and Matter Waves

Fundamentals Of Physics

Answers without the blur.

106 Questions for Chapter 38: Photons and Matter Waves

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