7. Which of the following statements is true forthe experimental findings on photoelectriceffect?Within the limits of experimental accuracythere is not time interval between thearrival of light at the metallic surface andemission of photoelectrons.A bright light yield the same number ofphotoelectrons than a dim one at thesame frequency but the electron energiesare not the same.Higher frequency of light yields morephotoelectrons at the same intensity oflight incident on the metal surface.Both the intensity and frequency of lightdo not affect the number ofphotoelectrons produced at the metallicsurface as well as the energy of theemerging photoelectrons. 8. The experiment that confirmed the existenceof de Broglie waves is theMillikan-oil drop experiment.Moessbauer Effect experiment.Frank-Hertz experiment.Davisson-Germer experiment.

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Answered: 7. Which of the following statements is…

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A monochromatic light source illuminates the surface of metal X. The maximum kinetic energy of electrons leaving the surface of the metal is shown in the graph above.An ammeter is connected to the standard photoelectric effect circuit to measure the photoelectric current arising from the electrons moving between the cathode and anode of the vacuum tube containing the illuminated sample. The current is found to be 12.4mA when the metal is illuminated with a wavelength of 184.2nm.What is the energy (eV) of the photons striking metal X?
A photoelectric effect is observed in a particular metal when a maximum wavelength of 700 nm is used. a.Determine the work function. b.What is the stopping potential of the electrons if a wavelength of 500 nm is used instead? c.Graph the maximum kinetic energy of the photoelectrons as a function of the light illuminated over this metal.
3. Light of wavelength 500. nm is incident on a metallic surface. If the stopping potential for the photoelectric effect is 0.450 V, find (a) the maximum kinetic energy of the emitted electrons, (b) the work function, and (c) the cutoff wavelength. 11
9. Considering the photoelectric effect; a) If a material has a cutoff wavelength of 780 nm what is the work function of the material? b) What is the maximum speed of liberated electrons when light with a wavelength of 410 nm is used to illuminate the material? c) If a liberated electron has 3.2349 eV of kinetic energy and it was a photon emitted from a hydrogen atom transition that liberated it, what energy level transition occurred? State both the initial and final energy level.
QUESTION 24 When ultraviolet light with a wavelength of 317 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.76 x 10-1 J. How much energy, in Joule, does an electron have to gain in order to escape from the metal surface? Exponential format with 3 SF.
5) A metal with work function 9.05 eV is used for a photoelectric effect lab. Find the energy of the electrons if light with 200nm wavelength is used. 6) Energy levels for a particular system is given as En = 10.5 n(n+1)/n^3 in eV. Find the energy for electron transition from n=2 to n=4. Determine if this transition is an absorption that requires energy or it is an emission that releases photon.