A) Photoelectric effect B) Compton effect C) Photovoltaic effect D) Photoconductive effect
A) Conduction electrons B) Photoelectrons C) Core electrons D) Valence electrons
A) Electromagnetism B) Quantum chemistry C) Thermodynamics D) Classical mechanics
A) Not affect electrons at all B) Transfer energy continuously, leading to electron emission when enough energy accumulates C) Dislodge electrons only above a certain frequency D) Transfer energy in discrete packets
A) Light is a continuous wave B) Light consists of discrete energy packets called photons C) Light does not interact with electrons D) Light's energy accumulates over time from a continuous wave
A) Saturation frequency B) Threshold frequency C) Stopping frequency D) Cut off frequency
A) The kinetic energy decreases B) The kinetic energy remains the same C) The maximum kinetic energy of the emitted electrons increases D) The kinetic energy becomes zero
A) Increases the rate at which electrons are ejected B) Decreases the kinetic energy of the photoelectrons C) Decreases the rate at which electrons are ejected D) Does not affect the rate at which electrons are ejected
A) More than 10−3 second B) Exactly 1 second C) More than 1 second D) Less than 10−9 second
A) X-ray diffraction B) Nuclear magnetic resonance C) Angle-resolved photoemission spectroscopy D) Mass spectrometry
A) Insulators B) Semiconductors C) Metals and other conductors D) Gases
A) Stopping potential or cut off potential B) Saturation potential C) Peak potential D) Threshold potential
A) eVo = Kmax B) eVo = f C) eVo = I D) eVo = Vo
A) Has no effect on the energy barrier B) Eliminates the energy barrier C) Increases the energy barrier to photoemission D) Decreases the energy barrier to photoemission
A) Internal photoemission B) External photoemission C) Vacuum photoemission D) Surface photoemission
A) Internal photoemission B) External photoemission C) Surface photoemission D) Vacuum photoemission
A) The kinetic energy remains the same B) The kinetic energy decreases C) The kinetic energy becomes zero D) The kinetic energy increases
A) The stopping voltage becomes zero B) The stopping voltage has to increase C) The stopping voltage decreases D) The stopping voltage remains the same
A) The stopping voltage increases B) The stopping voltage becomes zero C) The stopping voltage remains the same D) The stopping voltage decreases
A) Dependent on the emitting material's quantum properties B) Independent of the emitting material's quantum properties C) Dependent only on the frequency of light D) Dependent only on the intensity of light
A) Decreases the amount of UV B) Increases the amount of UV C) Alters the amount of UV D) Has no effect on the amount of UV
A) Xenon arc lamps B) Halogen lamps C) LEDs D) Incandescent bulbs
A) LEDs B) Incandescent bulbs C) Xenon arc lamps D) Fluorescent lamps
A) Ultraviolet lasers and synchrotron radiation B) Microwave lasers and synchrotron radiation C) Infrared lasers and synchrotron radiation D) Gamma-ray lasers and synchrotron radiation
A) A fluctuating external voltage B) A negative external voltage C) No external voltage D) A positive external voltage
A) The photoelectric current decreases B) The photoelectric current remains the same C) The photoelectric current becomes zero D) The photoelectric current increases
A) Exponential B) Parabolic C) Sigmoidal D) Linear
A) Decreases the photoelectric current B) Does not affect the photoelectric current C) Makes the photoelectric current zero D) Increases the photoelectric current
A) Increases the number of electrons reaching the collector B) Prevents all but the highest-energy electrons from reaching the collector C) Allows all electrons to reach the collector D) Does not affect the electrons reaching the collector
A) It is independent of photon energy B) It is a function of photon energy C) It is a function of light frequency D) It is a function of light intensity
A) It measures intensity distributions to infer material properties B) It measures energy distributions to infer material properties C) It measures angular distributions to infer material properties D) It measures frequency distributions to infer material properties
A) Niels Bohr B) Max Planck C) Erwin Schrödinger D) Albert Einstein
A) The Einstein constant B) The Bohr constant C) The Schrödinger constant D) The Planck constant
A) K_max = W - hν B) K_max = hν / W C) K_max = hν + W D) K_max = hν - W
A) V_o = (h/e)(ν_o - ν) B) V_o = (h/e)(ν - ν_o) C) V_o = (h/e)(ν + ν_o) D) V_o = (h/e)(ν / ν_o)
A) Johann Elster B) Heinrich Hertz C) Alexandre Edmond Becquerel D) Willoughby Smith
A) 1873 B) 1887 C) 1839 D) 1897
A) Philipp Lenard B) Wilhelm Hallwachs C) Heinrich Hertz D) J. J. Thomson
A) Max Planck B) Lenard C) Albert Einstein D) J. J. Thomson
A) 1921 B) 1900 C) 1914 D) 1905
A) Max Planck B) Robert A. Millikan C) Albert Einstein D) Georgi Nadjakov
A) Max Planck B) Albert Einstein C) Gilbert N. Lewis D) Robert A. Millikan
A) The photoelectret state in dielectrics. B) The quantization of light energy. C) The wave-particle duality of light. D) The photoelectric effect in gases.
A) 100 attoseconds B) 20 attoseconds C) 1 femtosecond D) 45 attoseconds
A) Liquid crystal displays B) Cathode ray tubes C) Video camera tubes like the Image dissector D) Plasma screens
A) Infrared region B) Visible light region C) Gamma-ray region D) Ultraviolet region
A) Iron B) Aluminum C) Copper D) Lead
A) σ_compton + σ_pp B) σ_pe + σ_compton C) σ_pe + σ_pp D) σ_pe + σ_compton + σ_pp
A) Compton scattering B) Pair production C) Photoelectric effect D) Thermal absorption
A) Above 0.5 MeV B) Above 1.022 MeV C) Below 1 MeV D) Below 0.5 MeV
A) Thermal absorption B) Pair production C) Photoelectric absorption D) Compton scattering |