Work function of three metals A, B and C are 4.5 eV, 4.3 eV and 3.5 eV respectively. If a light ofwavelength 4000 Å is incident on the metals thenA- photoelectrons are emitted from A.B- photoelectrons are emitted from B.C- photoelectrons are emitted from C.D- photoclectrons are emitted from all the metals.

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Answered: Work function of three metals A, B and…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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21 Green light shining on a sodium surface causes photoelectrons with maximum kinetic energies of 0.22 eV to be emitted. If the work function of sodium is 2.28 eV, what is the frequency of light used? 1ev= 1.6x10^-19J h= 6.673x10 ^-34 J s * L 5.2 x10^14 Hz 4.2 x10^14 Hz 6.0 x10^14 Hz 3.2 x10^14 Hz
Black body radiation experiments showed that: a. you can not measure position and momentum at the same time with complete accuracy b. angular momentum is quantized c. light has momentum d. only one electron can occupy a given state e. energy is quantized f. matter can behave like a wave
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0.2 eV 0.9 eV 1.1 eV A metal with a work function of 3.5 electron volts is exposed to photons of energy 3.7 electron volts. What is the maximum kinetic energy of the emitted photoelectrons? 7.7 eV
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Electron microscopes allow us to see things that are smaller than we can see with optical microscopes because a.Electrons are smaller than photons b.The electrons have a shorter wavelength than visible light c.Electron microscopes operate in a vacuum while optical microscopes do not d.Electrons are larger than photons e.The electrons have a longer wavelength than visible light

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