Modern Physics For Scientists And Engineers
2nd Edition
ISBN: 9781938787751
Author: Taylor, John R. (john Robert), Zafiratos, Chris D., Dubson, Michael Andrew
Publisher: University Science Books,
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Chapter 4, Problem 4.25P
To determine
The predicted shift of wavelength and the percent shift in the wavelength.
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4.13 Photodiode in photoconductive mode. A photodiode is connected in reverse mode with a small reverse voltage to ensure low reverse current. The leakage current is 40 nA and the sensor operates at 20°C. The junction has an area of 500 um? and operates from a 3 V source, as shown in Figure 4.31. The resistor is 240 S2. Calculate the voltage across R in the dark and when illuminated with a red laser beam (800 nm) with power density of 5 mW/cm². Assume a quantum efficiency of 50%.
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Figure 1: Schematic diagram fr question 3.
6.133 Blackbody radiation is the term used to describe thedependence of the radiation energy emitted by an objecton wavelength at a certain temperature. Planck proposed the quantum theory to account for the dependence.Shown in the figure is a plot of the radiation energyemitted by our sun versus wavelength. This curve ischaracteristic of objects at about 6000 K, which is thetemperature at the surface of the sun. At a highertemperature, the curve has a similar shape but themaximum will shift to a shorter wavelength. (a) Whatdoes this curve reveal about two consequences ofgreat biological significance on Earth? (b) How areastronomers able to determine the temperature at thesurface of stars in general?
Chapter 4 Solutions
Modern Physics For Scientists And Engineers
Ch. 4 - Prob. 4.1PCh. 4 - Prob. 4.2PCh. 4 - Prob. 4.3PCh. 4 - Prob. 4.4PCh. 4 - Prob. 4.5PCh. 4 - Prob. 4.6PCh. 4 - Prob. 4.7PCh. 4 - Prob. 4.8PCh. 4 - Prob. 4.9PCh. 4 - Prob. 4.10P
Ch. 4 - Prob. 4.11PCh. 4 - Prob. 4.12PCh. 4 - Prob. 4.13PCh. 4 - Prob. 4.14PCh. 4 - Prob. 4.15PCh. 4 - Prob. 4.16PCh. 4 - Prob. 4.17PCh. 4 - Prob. 4.18PCh. 4 - Prob. 4.19PCh. 4 - Prob. 4.20PCh. 4 - Prob. 4.21PCh. 4 - Prob. 4.22PCh. 4 - Prob. 4.23PCh. 4 - Prob. 4.24PCh. 4 - Prob. 4.25PCh. 4 - Prob. 4.26PCh. 4 - Prob. 4.27PCh. 4 - Prob. 4.28PCh. 4 - Prob. 4.29PCh. 4 - Prob. 4.30PCh. 4 - Prob. 4.31PCh. 4 - Prob. 4.32PCh. 4 - Prob. 4.33P
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