College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
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Chapter 27, Problem 41P
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The work function of cesium is 2.1 eV.
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Determine the lowest frequency photon that can eject an electron from cesium.
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Determine the maximum possible kinetic energy in electron volts of a photoelectron ejected from the metal that absorbs a 320-nm photon.
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Why we use cesium as a photo emissive surface ?
Cesium has large number of electrons
It has negative charge
O It has low work function
It emits electrons of same K.E
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Chapter 27 Solutions
College Physics
Ch. 27 - Prob. 1RQCh. 27 - Prob. 2RQCh. 27 - Prob. 3RQCh. 27 - Prob. 4RQCh. 27 - Prob. 5RQCh. 27 - Prob. 6RQCh. 27 - Prob. 1MCQCh. 27 - Prob. 2MCQCh. 27 - Prob. 3MCQCh. 27 - Prob. 4MCQ
Ch. 27 - Prob. 5MCQCh. 27 - Prob. 6MCQCh. 27 - Prob. 7MCQCh. 27 - Prob. 8MCQCh. 27 - Prob. 9MCQCh. 27 - Multiple Choice Questions In which of the...Ch. 27 - Prob. 11MCQCh. 27 - Prob. 12MCQCh. 27 - Prob. 13CQCh. 27 - Prob. 14CQCh. 27 - Prob. 15CQCh. 27 - Prob. 16CQCh. 27 - Prob. 17CQCh. 27 - Prob. 18CQCh. 27 - Prob. 19CQCh. 27 - Prob. 20CQCh. 27 - Prob. 1PCh. 27 - Prob. 2PCh. 27 - Prob. 3PCh. 27 - Prob. 4PCh. 27 - 27.1 Black Body Radiation * EST Estimate the...Ch. 27 - Prob. 6PCh. 27 - Prob. 7PCh. 27 - Prob. 8PCh. 27 - Prob. 9PCh. 27 - Prob. 10PCh. 27 - Prob. 11PCh. 27 - Prob. 12PCh. 27 - Prob. 13PCh. 27 - Prob. 14PCh. 27 - Prob. 15PCh. 27 - Prob. 16PCh. 27 - Prob. 17PCh. 27 - Prob. 18PCh. 27 - Prob. 19PCh. 27 - Prob. 20PCh. 27 - Prob. 21PCh. 27 - Prob. 22PCh. 27 - Prob. 23PCh. 27 - Prob. 24PCh. 27 - Prob. 25PCh. 27 - Prob. 26PCh. 27 - Prob. 27PCh. 27 - Prob. 28PCh. 27 - Prob. 29PCh. 27 - Prob. 30PCh. 27 - Prob. 31PCh. 27 - Prob. 32PCh. 27 - Prob. 33PCh. 27 - Prob. 34PCh. 27 - Prob. 35PCh. 27 - Prob. 36PCh. 27 - Prob. 37PCh. 27 - Prob. 38PCh. 27 - Prob. 39PCh. 27 - Prob. 40PCh. 27 - Prob. 41PCh. 27 - 42. * EST Estimate the temperature of the Sun's...Ch. 27 - Prob. 44GPCh. 27 - Prob. 46GPCh. 27 - Prob. 47GPCh. 27 - Prob. 48GPCh. 27 - Prob. 49GPCh. 27 - Prob. 50GPCh. 27 - Prob. 51GPCh. 27 - Prob. 52GPCh. 27 - Prob. 53GPCh. 27 - Prob. 54GPCh. 27 - Prob. 55RPPCh. 27 - Prob. 56RPPCh. 27 - Prob. 57RPPCh. 27 - Prob. 58RPPCh. 27 - Prob. 59RPPCh. 27 - Prob. 60RPPCh. 27 - Prob. 61RPPCh. 27 - Prob. 62RPPCh. 27 - Prob. 63RPPCh. 27 - Prob. 64RPP
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- a. Determine the maximum value of the energy gap that a semiconductor, used as a photoconductor, can have if it is to be sensitive to yellow light (600 nm). b. A photodetector whose area is 5 × 10* cm’ is irradiated with yellow light whose intensity is 2 mW cm". Assuming that each photon generates one electron-hole pair, calculate the number of pairs generated per second. c. From the known energy gap of the semiconductor GaAs (E, = 1.42 eV), calculate the primary wavelength of photons emitted from this crystal as a result of electron-hole recombination. d. Is the above wavelength visible? e. Will a silicon photodetector be sensitive to the radiation from a GaAs laser? Why?arrow_forwardIn the photoelectric-effect experiment, as illustrated by the figure, a current is measured while light is shining on the cathode. But this does not appear to be a complete circuit, so how can there be a current? Explain.arrow_forwardTrue or False an electron is NOT released from an object experiencing the photoelectric effect. A. True B. Falsearrow_forward
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- C. Examine how different photons in the simulation affect each molecule. Record your observations for each combination in a few descriptive words. Microwave 8 CO N2 02 CO2 H2O NO2 03 Infrared Visible Light Ultraviolet D. Which molecule(s) were not affected by any of the radiation in the sim? Why might this be important? (Hint: think about what molecules are commonly found in our air and atmosphere) E. Examine your observations above and summarize the effects of each kind of radiation on the molecules in the simulation. Effect(s) on Molecules Microwave Infrared Visible Light Ultravioletarrow_forwardThe absorption spectrum of an atom consists of the wavelengths 200 nm, 300 nm, and 500 nm.a. Draw the atom’s energy-level diagram.b. What wavelengths are seen in the atom’s emission spectrum?arrow_forwardWhat are the advantages of using a synchrotron to generate X-rays over a Copper sourse? A. It produces more intense X-rays В. Different wavelengths of X-rays can be generated. C. The synchrotron can be used for anonymous scattering to solve phase probeln. D. Can be used to solve the structure without protein crystals. E. Answers A. B. and C.arrow_forward
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