COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 26, Problem 91QAP
To determine
(a)
Energy gained by electron
To determine
(b)
Percentage of energy lost by photon
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Problems
• A beam of light with intensity of 3mW and a wavelength of 742 nm is
striking a solar cell. Estimate the number of photons incident on the
cell.
• If the dark saturation current of a solar cell is 1.7X10-8 A/m2, the cell
temperature is 27 °C, and the short-circuit current density is 250
A/m2, Vmax = 0.526 V. Calculate the open-circuit voltage, Voci current
density at maximum power, Imax; maximum power, Pmaxi and
maximum efficiency, nmax: When the available solar radiation is 820
W/m2
Problems
• A beam of light with intensity of 3mW and a wavelength of 742 nm is
striking a solar cell. Estimate the number of photons incident on the
cell.
• If the dark saturation current of a solar cell is 1.7X10-8 A/m², the cell
temperature is 27 °C, and the short-circuit current density is 250
A/m?, Vmax = 0.526 V. Calculate the open-circuit voltage, Voci current
power, maximumlmax; power,maximunfatdensity
radiationsolar availablethe Whennmax.efficiency,maximum
W/m?
and
820 is
1. • Response of the eye. The human eye is most sensitive to
BIO green light of wavelength 505 nm. Experiments have found
that when people are kept in a dark room until their eyes adapt
to the darkness, a single photon of green light will trigger
receptor cells in the rods of the retina. (a) What is the fre-
quency of this photon? (b) How much energy (in joules and
eV) does it deliver to the receptor cells? (c) To appreciate what
a small amount of energy this is, calculate how fast a typical
bacterium of mass 9.5 x 10-12 g would move if it had that
much energy.
Chapter 26 Solutions
COLLEGE PHYSICS
Ch. 26 - Prob. 1QAPCh. 26 - Prob. 2QAPCh. 26 - Prob. 3QAPCh. 26 - Prob. 4QAPCh. 26 - Prob. 5QAPCh. 26 - Prob. 6QAPCh. 26 - Prob. 7QAPCh. 26 - Prob. 8QAPCh. 26 - Prob. 9QAPCh. 26 - Prob. 10QAP
Ch. 26 - Prob. 11QAPCh. 26 - Prob. 12QAPCh. 26 - Prob. 13QAPCh. 26 - Prob. 14QAPCh. 26 - Prob. 15QAPCh. 26 - Prob. 16QAPCh. 26 - Prob. 17QAPCh. 26 - Prob. 18QAPCh. 26 - Prob. 19QAPCh. 26 - Prob. 20QAPCh. 26 - Prob. 21QAPCh. 26 - Prob. 22QAPCh. 26 - Prob. 23QAPCh. 26 - Prob. 24QAPCh. 26 - Prob. 25QAPCh. 26 - Prob. 26QAPCh. 26 - Prob. 27QAPCh. 26 - Prob. 28QAPCh. 26 - Prob. 29QAPCh. 26 - Prob. 30QAPCh. 26 - Prob. 31QAPCh. 26 - Prob. 32QAPCh. 26 - Prob. 33QAPCh. 26 - Prob. 34QAPCh. 26 - Prob. 35QAPCh. 26 - Prob. 36QAPCh. 26 - Prob. 37QAPCh. 26 - Prob. 38QAPCh. 26 - Prob. 39QAPCh. 26 - Prob. 40QAPCh. 26 - Prob. 41QAPCh. 26 - Prob. 42QAPCh. 26 - Prob. 43QAPCh. 26 - Prob. 44QAPCh. 26 - Prob. 45QAPCh. 26 - Prob. 46QAPCh. 26 - Prob. 47QAPCh. 26 - Prob. 48QAPCh. 26 - Prob. 49QAPCh. 26 - Prob. 50QAPCh. 26 - Prob. 51QAPCh. 26 - Prob. 52QAPCh. 26 - Prob. 53QAPCh. 26 - Prob. 54QAPCh. 26 - Prob. 55QAPCh. 26 - Prob. 56QAPCh. 26 - Prob. 57QAPCh. 26 - Prob. 58QAPCh. 26 - Prob. 59QAPCh. 26 - Prob. 60QAPCh. 26 - Prob. 61QAPCh. 26 - Prob. 62QAPCh. 26 - Prob. 63QAPCh. 26 - Prob. 64QAPCh. 26 - Prob. 65QAPCh. 26 - Prob. 66QAPCh. 26 - Prob. 67QAPCh. 26 - Prob. 68QAPCh. 26 - Prob. 69QAPCh. 26 - Prob. 70QAPCh. 26 - Prob. 71QAPCh. 26 - Prob. 72QAPCh. 26 - Prob. 73QAPCh. 26 - Prob. 74QAPCh. 26 - Prob. 75QAPCh. 26 - Prob. 76QAPCh. 26 - Prob. 77QAPCh. 26 - Prob. 78QAPCh. 26 - Prob. 79QAPCh. 26 - Prob. 80QAPCh. 26 - Prob. 81QAPCh. 26 - Prob. 82QAPCh. 26 - Prob. 83QAPCh. 26 - Prob. 84QAPCh. 26 - Prob. 85QAPCh. 26 - Prob. 86QAPCh. 26 - Prob. 87QAPCh. 26 - Prob. 88QAPCh. 26 - Prob. 89QAPCh. 26 - Prob. 90QAPCh. 26 - Prob. 91QAPCh. 26 - Prob. 92QAPCh. 26 - Prob. 93QAPCh. 26 - Prob. 94QAPCh. 26 - Prob. 95QAPCh. 26 - Prob. 96QAPCh. 26 - Prob. 97QAPCh. 26 - Prob. 98QAPCh. 26 - Prob. 99QAPCh. 26 - Prob. 100QAPCh. 26 - Prob. 101QAPCh. 26 - Prob. 102QAPCh. 26 - Prob. 103QAPCh. 26 - Prob. 104QAP
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- •61 SSM The function (x) displayed in Eq. 38-27 can describe a free particle, for which the potential energy is U(x) = 0 in Schrödinger's equation (Eq. 38-19). Assume now that U(x) = U, = a constant in that equation. Show that Eq. 38-27 is a solution of Schrödinger's equation, with %3D -V2m(E – U) giving the angular wave number k of the particle. k k =arrow_forward• Which among the following is a key process adopted for the laser beam formation as it undergoes the light amplification? A. spontaneous Emission, B. stimulated Emission, C. both A and B, D. none of the above. • In Stimulated Emission, which among the following parameters of generated photon is/are similar to the photon of incident wave? A. phase, B. frequency, C. polarization & direction of travel, D. all of the above. • In a LASER structure, the existence of standing waves is possible at frequencies for which the distance between the mirrors is an integral number of A. λ/2, 2/4, 2/6, D. 1/8. В. C. A/6, С.arrow_forwardPhotoelectric problem A light with a wavelength of 10-5 cm is struck on a metal cathode. Determine the energy of the incident photon as well as the kinetic energy of the emitted electron knowing that the working function has a value of 2 eV. Data: 1 eV = 1.67•10-19 J.arrow_forward
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