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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Question
Chapter 4, Problem 4.5P
To determine
The range of energies of the visible photons and to comment on the energies of UV and IR photons.
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What is the energy (in eV) of a photon with 150 nm wavelength?
Things around you are emitting infrared radiation that includes the wavelength 1.04 10-5 m. What is the energy of these IR photons?
The wavelengths of visible light range from approximately 400400 to 750 nm750 nm.
Part (a) What is the minimum energy for a photon in this range? Give your answer in electron volts.
Part (b) What is the maximum energy for a photon in this range? Give your answer in electron volts.
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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- (a) Calculate the number of photoelectrons per second that are ejected from a 1.00-mm2 area of sodium metal by a 500-nm radiation with intensity I .30kW/m2 (the intensity of sunlight above Earth’s atmosphere). (b) Given the work function of the metal as 2.28 eV, what power is carried away by these photoelectrons?arrow_forwardWhat is the energy (in eV) of the following photons? A 200-nm photon of ultraviolet light?arrow_forwardA dental X-ray typically affects 195 g of tissue and delivers about 3.85 µJ of energy using X-rays that have wavelengths of 0.0255 nm. What is the energy in electron volts of a single photon of these X-rays? energy of a photon: How many photons are absorbed during the dental X-ray? number of photons absorbed: eV photonsarrow_forward
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