General Physics, 2nd Edition
2nd Edition
ISBN: 9780471522782
Author: Morton M. Sternheim
Publisher: WILEY
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Question
Chapter 31, Problem 43E
(a)
To determine
Reason why thin aluminum sheet absorbs least energy X rays without absorbing high energy photons.
(b)
To determine
Advantage of such aluminum filter in medical uses of X ray.
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The average threshold of dark-adapted (scotopic) vision is 4.00 10-11 W/m2 at a central wavelength of 500 nm. If light with this intensity and wavelength enters the eye and the pupil is open to its maximum diameter of 9.00 mm, how many photons per second enter the eye?
photons/s
A solid metal sphere emits 1.42 ✕ 1020 photons every second with a radiating power of 2.53 W.
(a)Determine the energy associated with each photon.
eV
(b)Assuming the sphere's power output is associated with the peak wavelength, determine the temperature of the sphere at which this wavelength is emitted.
K
Imagine you are testing a solar cell in your lab. You irradiate the solar cell with photonsfrom an Ar ion laser. The laser output is 532 nm light at 5.0 W power (1 W = 1 J/s), and the diameter of the laser beam is 5 mm. Assuming the laser beam is the only light source incident on the solar cell, and that each photon incident on the solar cell surface produces one electron coming out of the cell, what current, I(in A),would you measure under these irradiation conditions? (1 A = 1 C/s; the charge of one electron e= 1.602 x 10-19C).[hint: how many photons per second strike the surface of the solar cell?]
Chapter 31 Solutions
General Physics, 2nd Edition
Ch. 31 - Prob. 1RQCh. 31 - Prob. 2RQCh. 31 - Prob. 3RQCh. 31 - Prob. 4RQCh. 31 - Prob. 5RQCh. 31 - Prob. 6RQCh. 31 - Prob. 7RQCh. 31 - Prob. 8RQCh. 31 - Prob. 9RQCh. 31 - Prob. 10RQ
Ch. 31 - Prob. 1ECh. 31 - Prob. 2ECh. 31 - Prob. 3ECh. 31 - Prob. 4ECh. 31 - Prob. 5ECh. 31 - Prob. 6ECh. 31 - Prob. 7ECh. 31 - Prob. 8ECh. 31 - Prob. 9ECh. 31 - Prob. 10ECh. 31 - Prob. 11ECh. 31 - Prob. 12ECh. 31 - Prob. 13ECh. 31 - Prob. 14ECh. 31 - Prob. 15ECh. 31 - Prob. 16ECh. 31 - Prob. 17ECh. 31 - Prob. 18ECh. 31 - Prob. 19ECh. 31 - Prob. 20ECh. 31 - Prob. 21ECh. 31 - Prob. 22ECh. 31 - Prob. 23ECh. 31 - Prob. 24ECh. 31 - Prob. 25ECh. 31 - Prob. 26ECh. 31 - Prob. 27ECh. 31 - Prob. 28ECh. 31 - Prob. 29ECh. 31 - Prob. 30ECh. 31 - Prob. 31ECh. 31 - Prob. 32ECh. 31 - Prob. 33ECh. 31 - Prob. 34ECh. 31 - Prob. 35ECh. 31 - Prob. 36ECh. 31 - Prob. 37ECh. 31 - Prob. 38ECh. 31 - Prob. 39ECh. 31 - Prob. 40ECh. 31 - Prob. 41ECh. 31 - Prob. 42ECh. 31 - Prob. 43ECh. 31 - Prob. 44ECh. 31 - Prob. 45ECh. 31 - Prob. 46ECh. 31 - Prob. 47ECh. 31 - Prob. 48ECh. 31 - Prob. 49ECh. 31 - Prob. 50ECh. 31 - Prob. 51ECh. 31 - Prob. 52ECh. 31 - Prob. 53ECh. 31 - Prob. 54ECh. 31 - Prob. 55ECh. 31 - Prob. 57E
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